Supernatural is now in it's 5th (and possibly last) season. I have found some spoilers for the next few episodes. So for any of you fellow Supernatural fans, enjoy!
Episode 5.08: Changing Channels (fka "Are You There God? It's Me, Sam Winchester.")
Airdate: November 5, 2009
10/18 - When Sam and Dean find themselves living their lives on what appear to be TV shows, it makes for a whole new style of reality television and they wonder if the Trickster (guest star Richard Speight, Jr.) is to blame. From a sitcom to a soapy hospital drama to a Japanese game show to a crime procedural, each new experience they encounter is more bizarre than the next and they want out. But is the Trickster really the mastermind behind the madness? Also starring Misha Collins as Castiel. Source: The CW
10/04 - Ever wonder what Supernatural would look like as a sitcom? You'll find out in episode 8. Laugh track and all. Source: The Ausiello Files
Episode 5.09: The Real Ghostbusters
Airdate: November 12, 2009
11/01 - Super fan Becky (guest star Emily Perkins) uses Chuck's (guest star Chuck Benedict) phone to trick Sam and Dean into attending a Supernatural fan convention, complete with fans dressed up as Sam and Dean. One of the activities is a live action role playing game, but things quickly turn sour after a real ghost appears on the scene. Source: The CW
10/11 - An upcoming episode, Sam and Dean are going to a Supernatural fan convention. Source: Kristin on E!Online
09/27 - Demian: 20s-30s: This short, chubby, sweet young man is a copier repairman with a surprisingly heroic streak lurking just underneath his dweeby exterior - he also has a gentleness and sensitive side lying beneath as well. Barnes: 20s-30s: Demian's pal, he's a very tall, skinny, nerdy stereo salesman who has unexpectedly heroic aspirations. He also has a courageous streaks, as well as a gentle and sensitive side under his unprepossessing exterior. Source: SpoilerTV
Episode 5.10: Abandon All Hope
Airdate: November 19, 2009
10/24 - Sam, Dean and Castiel track down the Colt and head off to find Lucifer to send him back to Hell. It's a hunters' reunion when the crew joins forces with Bobby, Ellen (guest star Samantha Ferris) and Jo (guest star Alona Tal) for what could be their last night on Earth. Source: The CW
10/24 - In the November 19 episode of the CW sci-fi series, [Misha Collins'] character, Castiel, an angel of the Lord, will come face-to-face with you-know-who. "I'm on a very important recon mission in Missouri when Lucifer (Mark Pellegrino) captures and interrogates me by trapping me in a burning ring of fire using holy oil," says Misha. "It's our first head-to-head." Or halo-to-horn. Source: Keck's Exclusives
10/11 - A Supernatural source has confirmed that the ubiquitous and talented Mark Sheppard will play a "pivotal" crossroads demon named Crowley in Episode 10 of the season. The episode is called "Abandon All Hope...," and it was written by Ben Edlund and will be directed by Phil Sgriccia. It's the final Supernatural episode of 2009 . The episode is "epic" and will "definitely ... have the fans on the edge of their seats going into the holiday 'hellatus,'" my source said. Source: Chicago Tribune
10/04 - Crowly: 40's or 50's male Demon - he is bit more urbane and sophisticated than what we've seen up to this point. He wears a suit, drinks fine wines, still pretty cruel and decadent, though. Please submit all ethnicities. Recurring guest star. Source: SpoilerTV
Episode 5.11: Sam, Interrupted
Airdate: January 2010
10/18 - Martin Creaser: A weathered man in his late 40s-mid 50s, this twitchy, anxious ball of nerves is a former hunter who has ended up in a psych ward, where strange happenings are afoot. Any ethnicity. Dr. Erica Fletcher: A beautiful, smart, credible psychiatrist in her 30s with a sweetly sympathetic manner who seems to understand Dean's conflict and pains. Any ethnicity. Source: SpoilerTV
Episode 5.12: Swap Meat
Airdate: January 2010
11/01 - Sam and Dean switch bodies in episode 12! Source: The Ausiello Files
11/01 - Gary: 17 years old (would prefer 18 and overs), puny, gawky, bespectacled, smart and geek (think "McLovin" from "Superbad"), he's a naive, amateur Satanist who works at a fast food joint and longs to break free from his wealthy, stifling parents. He's granted one of his wishes, and starts to live the life he's always wanted. Nora: 16 years old (would prefer 18 and over), she is a cute, smart, alternative girl (in the vein of Thora Birch in "American Beauty") who is a naive, conflicted high school student, she's an amateur Satanist, she's not really interested in hurting anyone; she's mostly going along with Gary and Trevor's plot because she has a crush on Gary. Nora's follower-type nature is squelched when she becomes possessed by a dark force. Please submit all ethnicities. Source: SpoilerTV
General Spoilers:
10/24 - Anna will definitely be back. Source: Kristin on E!Online
10/18 - Two fan favorites are going to die this season, and in the same episode, Sam and Dean fight Lucifer. Source: Kristin on E!Online
All of these spoilers were provided by SpoilerFix.com