Lets see if I can help a little-- There is a whole bunch of collectibles called Non-sports trading cards. There are base set, inserts, autographs, and relics/PW/material cards. There are few companies that make these and some are Topps, Razor, Panni/Donruss and they all use sticker autographs. Other companies like- RA, Breygent, Artbox have their autographs on the card. (and the now closed Inkworks).
I believe Topps' next release is an Iron Man 2 set but no info has really been released yet. Their last release was clone wars which you can probably find packs still at Target and Walmart- but the odds of pulling an autograph are very low. It is a expensive hobby and also beware that there are conterfiet cards out there but they are usually higher end cards like Depp from artbox, alot from the Spiderman movie RA release and a few of the Inkworks cards.
I don't have many Topps cards in my collection because I don't lke sticker autographs but here is a scan of what some look like.
Topps Heroes and Clone Wars-

If you look at my photobucket link below and go to trading cards there are tons of scans of cards in my colllection.
I hope this helps you a bit-- cheers! Michele