You could do what I did for my manga list - sit down one day and type the entire thing out in a notepad file. Then just copy paste. You could do it in stages, I guess, Letter A one day, B another day....and so on. Look on the bright side, you can see at one stretch how many anime you've watched - heck, it kinda gives me a boost to the pride seeing the entire list - it might do to you too
Here's my anime list, a bit out-dated; I'll update it after a month, I have to tackle this month's downloads too:
Afro Samurai
Azumanga Daioh + OVA
Baccano!
Bakemonogatari (Up to 14th Episode, as of March 2010)
Black Lagoon (Both Seasons)
Cardcaptor Sakura
Cowboy Bebop
Dance in the Vampire Bund
Deathnote + Movie
Dot Hack Roots
Dot Hack Sign
FLAG
Genshiken (Both Seasons)
GITS: SAC
GITS: 2nd Gig
Gunslinger Girl (Both Seasons)
Hellsing
K-On!
Melancholy Of Haruhi Suzumiya (First season)
Onegai Teacher
Onegai Twins
Ouran Highschool Host Club
REC
Samurai - Hunt for the Sword
School Days
Sekirei
Seikon No Qwaser
Sora No Woto
Welcome to NHK!
Witchblade
Witch Hunter Robin (episodes 1 to 15 - completing by June 2010)
Wolf's Rain (episodes 1 to 2, completing by June 2010)
Yokohama Kaidashi Kikou (OVAs)
Still downloading-
Allison And Lillia
Ef - A Tale of Memories
