I had that feeling once, tried to find some good sites but without luck... so I decided to make a tiny page and archive talents for vanilla, TBC and WotLK. It's not all patches, but it's better than nothing right?
Put up the code on my host at: http://wttm.ziuo.net. Basically what I did was to borrow the framework from Blizzard's old-school talent calculator and tweak it a bit, it should work with most browsers (no problems using it on my IE8, Chrome and Firefox), if it does not work well for you try one of the browsers I mentioned.
I dunno, I think some may find it nice to look at the old stuff, I myself wish I could look at the alpha and beta talents... too bad I couldn't find those.