Overall analysis for the end of the week (since I have tomorrow off thank god).
360: Sold out of the Arcade and the Elite. Two premiums left (and their boxes are sorta beat up, but otherwise they're in good shape). Eight Halo 360s left and they've been here for months. So they're going to stick around until the price drops. Pretty much everything: Halo 3, Mass Effect, GH III, Rock Band, Assassin's Creed, Orange Box, Bioshock, and COD4 have been selling well to varying degrees.
PS3: We had a big push for this thing in November and early December, but recently sales have died. Still, Assassin's Creed and COD4 are popular, although Uncharted and Ratchet rarely sell. I haven't seen a copy of Lair, Folklore, or Heavenly Sword leave the store in months.
PSP: Pretty popular. Still too many Star Wars bundles, but they're slowly moving. The best selling titles are to the kids that buy Transformers and Cars, or to the more hardcore crowd with games like FFT. The biggest question is "how can I put movies on it," and few people really care about the games for the thing.
NDS: Extremely popular. Especially now that we're "sold out" (corporate's making stores hold them until the day after Christmas). Popular games are pretty much anything these days. We've been restocked on Contra 4 constantly at this point. The only big hardcore game that hasn't sold lots is FFXIIRW, and we have a huge overstock of Phantom Hourglass.
Wii: Holy shit WTF. A lot of people don't even know this thing has been hard to find for the last year. I told one guy about the reservation thing since it could be a good last resort sort of thing, and he sorta laughed it off and said "what's the point?" since, you know, they're going to be pretty easy to find in January. ...Anyway, we sold a shitload of Mario and Sonic today, and we won't have any left at the end of the weekend. Super Mario Galaxy is close behind, but I think we should have copies left until Christmas Eve and maybe even the day after Christmas. DBZ is sorta popular. NiGHTS only sold to two guys (myself and a former coworker).
PS2: Yeah... not too many systems sold anymore. The big thing seems to be getting DBZBT3, Tony Hawk, Need for Speed, and sports games. It's pretty much becoming the cheap casual console like its father before it.