Do you know how much work this was?
NOrmally I would give you a link to look yourself, but I already had the list up from a project I did a few months back - so you're in luck. (Be grateful!)
July 2004
July 2-5 AnimeExpo-CA
http://www.anime-expo.org/July 9-11 Metrocon-FL
http://www.animemetro.com/metroconventions/control.cfmJuly 16-18 ConnetiCon Conn.
http://www.connecticon.org/July 16-18 Ikarsucon OH
http://www.ikasucon.org/July 30- Aug 1 Otacon MD
http://www.otakon.com/default2.aspAugust 2004
August 6-8 Ochibicon- TX
http://www.o-chibicon.com/August 6-8 Anime Festival Orlando- FL
http://www.animefestivalorlando.com/August 14-15 Yasumi Con FL
http://www.yasumicon.com/August 28 Tales of Anime CA
http://www.talesofanime.com/September 2004
September 3-6 AnimeFest- TX
http://www.animefest.org/AF2004/September 4-6 Kumoricon OR
http://www.kumoricon.org/September 4-6 Anime Vegas NV
http://www.animevegas.com/September 11-12 Japantown Anime Faire CA
http://www.jtaf.com/main.htmlSeptember 17-19 Nan Desu Kan CO
http://www.ndk.cc/September 17-19 AnimeIowa IO
http://www.animeiowa.com/September 24-26 Anime Weekend Atlanta GA
http://www.awa-con.com/October 2004
October 1-3 AniMagic CA
http://www.ani-magic.org/October 22-24 Oni Con TX
http://www.oni-con.com/October 22-24 AnimeReactor IL
http://www.animereactor.org/October 29-31 Anime USA- VA
http://www.animeusa.org/October 29-31 Yaoi Con CA
http://www.yaoicon.com/there was a small con in New York over the weekend of Oct. 19 - don't know the name of it - you can look it up. ^_^
November 2004
November 5-7 Nekocon VA
http://www.nekocon.org/November 19-20 Anime Sound & Vision IL
http://www.animesoundvision.com/November 19-20 Tsubasucon W.VA
http://www.tsubasacon.org/November 19-21 Sugoicon KY
http://www.sugoicon.org/news.phpNovember 27-28 Japan Expo CA
http://www.japanexpo.org/December 2004
December 17-19 Otakucon FL
http://www.otakucon.com/? = 2005 dates werent listed, so I wrote down 2004 dates or guessed the weekend close to the 2004 dates
January 2005
January 14-16 Ohayocon OH
http://www.ohayocon.com/January 21-23 Ushicon TX
http://www.ushicon.com/February 2005
February 6-8 ? Anime Pop Film Festival-TX
February 13-15 Katsucon VA
http://www.katsucon.com/February 21 ? KosaiKon Winter Anifest PA
http://www.kosaikon.com/February 28 ? Kamecon NH
http://www.kamecon.com/March 2005
March 5-6 ? Anime Overdose- CA
http://www.animeod.com/March 10-14 ? When Anime Attacks Film Series NY
http://www.bam.org/film/anime.aspxMarch 11-13 No Brand Con WI
http://www.nobrandcon.com/March 11-13 Anime Detour Min.
http://www.animedetour.com/March 19-21 ? Anime Express FL
March 20 ? Recca Anime CA
http://www.reccacon.com/March 25-27 KamiKazeCon TX
http://www.kamikazecon.com/March 25-27 Anime Oasis ID
http://www.animeoasis.org/April 2005
April 1-5 Middle Tenn. Anime Convention- TN
http://www.mtac.net/April 2-3 ? T-Mode VA
http://www.endgametournaments.com/April 2-4 FITcon FL
http://www.fitcon.info/April 3 ? Mini-Con OK
http://www.mini-con.com/April 8-10 Tekkoshocon PA
http://www.tekkoshocon.com/April 8-10 SakuraCon WA
http://www.sakuracon.org/April 17 ? Animarathon OH
http://www.bgsu.edu/studentlife/organizati...athon/About.htmApril 20 ? Takoma Park Library Anime Marathon WA DC
http://animetour.greatnow.com/Main.htmlApril 22-24 Kawaii Kon- HI
http://www.kawaii-kon.org/April 23-25 Bakuretsu Con- VT
April 29- May 1 Anime Boston Mass.
http://2005.animeboston.com/April 30- May 2 ? PersaCon- AL
http://www.geocities.com/chibicon2k3/May 2005
May 14-16 Anime Central IL
http://www.acen.org/May 20-22 Sogen Con Minn.
http://www.sogencon.com/May 21-23 ? JACON FL
http://www.jacon.org/May 27-29 Animazement NC
http://www.animazement.org/May 27-30 Fanime Con CA
http://www.fanime.com/May 28 30 ? Anime Mid-Atlantic VA
http://www.animemidatlantic.com/May 29-31 ? Pacific Media Expo CA
http://www.pacificmediaexpo.com/pmx/main.htmlJune 2005
June 3-5 Project A-kon TX
http://www.a-kon.com/June 10 ? Asian Film Festival -TX
June 12 ? Lakewood Public Library Anime Film Festival * OH
http://www.lkwdpl.org/anime/June 18-20 AnimeNEXT- NJ
http://www.animenext.org/June weekend after Fathers Day JAFAX Mich
http://www.jafax.org/June 24-26 PortConMaine Maine
http://www.portconmaine.com/September 2005
September 2-5 ? Big Apple Anime Fest NY
http://www.bigappleanimefest.com/September 9-11 Kimi no Hanyo - CA
http://www.ryoplace.net/KimiHanyo/I've only been to NDK, Sakura Con, and A-kon. A-kon... very busy I didn't have a whole lot of fun... but the drive sucked = not much fun at con
NDK , usually is good. I didn't have a great time this year and I'm honestly thinking about not going next year.. I guess I'll see how I feel in September
Sakura con - was fun, small, many guests, relaxing, all around a good time
I guess check to see what is in your area.