You seem to like fighting games, so this post is dedicated to fighting games. They've had a bit of a resurgence in the last two years, with the biggest one being Street Fighter 4. Super Street Fighter 4 is out now, so it's recommendable to just skip to that. Soul Calibur 4 came out a while ago so you should be able to get it pretty cheap. BlazBlue's pretty good and has been out for a bit, but the next version of it is coming out in July (BlazBlue Continuum Shift). It's more of a 'Super Blazblue' than a 'BlazBlue2'. You can download Battle Fantasia from the PlayStation network if you reeaallly want to (it never came out on disc for the PS3), but that's more of a cute diversion than a 'good fighting game'.

I don't really like Tekken, but Tekken 6 is available too. I love me some Virtua Fighter 5, but the 360 version is a newer/better version.

For Wii, the list is pretty short. There's Tatsunoko vs Capcom and several King of Fighters compilations, but I'd probably stick with Tatsunoko. Smash Bros. could be fun, but judging from your list (and the fact that you didn't get it for the GameCube) it doesn't seem like you have a lot of Nintendo history love.