This kind of stuff is always fun because it's basically interactive writing. When I was younger (around 10 - 13) and spent all my internet time on the magical AOL land, I ended up in RP chatrooms. If you were on AOL and did that then you probably recognize the "Vampire Tavern" and the "Medieval Tavern" -- yep, I was one of those, lol. I branched out after that, enjoying the company of other people who liked to write as different characters and I dabbled in all kinds of RP games from Myst to Sailor Moon to Final Fantasy. This section is just a list of games I'm now, the characters I play and how much I love the games. XD

STEEL MACHINE: (Stephen King Dressing Room - LJ-based) This is a fun RP because it's easy to pick up a character and toss them in to play with the others. Plus, it's all kinds of Stephen King characters meeting up for one big collective WTF and that's always awesome.
Characters I play: Chris Chambers (The Body), Lisey Landon (Lisey's Story), Peter McVries (The Long Walk), Scott Landon (Lisey's Story), Thad Beaumont (The Dark Half)

SWDR: (Star Wars Dressing Room - LJ-based) Just like the King DR, this one is way too much fun because it's full of other SW fans and also full of crack. It's a lot of fun to play in this one cause of everyone's senses of humor. :D
Characters I play: Gadell Vessau (OC), Jacen Solo (18yo), Kale Longo, Tenel Ka (post-DN), Sith!Tenel Ka, Zekk

THE HOLONET: (Star Wars - LJ-based) Most of the same people that are on the SWDR are on here, so it's the same great sense of humor just with more plot, both of which are awesome. Also, the premise is amazing. Jacen Solo Caedus flow-walked a ton and carbon froze a bunch of characters in different eras. This is where they all come back and try to figure out wth is going on.
Characters I play: Tenel Ka

UNDER ZENITH: (board-based) This is a new baby RP that myself and a friend started. It takes place on a space station and there are fandom characters who represent the seven Sins and seven Virtues that are causing trouble everywhere and fighting. Original characters are allowed as well as fandom characters (who can be Sins/Virtues or just on the station trying to help) and I'm really excited to see where this game goes. :D
Characters I play: Buster Bluth (Arrested Development), Dennis Reynolds (It's Always Sunny in Philadelphia), Lisey Landon (Lisey's Story), Louis (Left 4 Dead), Oscar Calraca (BioShock), Peter McVries (The Long Walk), Sam Winchester (Supernatural), Tenel Ka (Star Wars)