I have several completed sets of Marvel comic cards (bought back when I was SUPER into comic books, especially Marvel), but, by far, my favorite is the 1993 Marvel Masterpieces line. ♥ It just has such an wide variety of artwork by artists I considering amazing at the time (Julie Bell, Joe Jusko, and so many others I can't remember at the moment). I scanned a few cards from this set, so take a look if your interested. :)
The Spider-man one below is THE best I think. Its just so cool looking to me. ♥

( 8 more cards from this set. )
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Eyeshield 21 is currently consuming my soul. ♥Shut up, I know I've been raving over this series for more than a year. I just can't get enough. XD Sena. Shin. Himura. Jumonji. Mamori. I freaking LOVE those characters (plus a bunch more). They're sooo full of personality and quirks, and they just make me smile. I'M A DORK. Also, the matches against various other football teams are oddly addicting and exciting. For example, the end of the match against the NASA Aliens? I was seriously about to explode in my seat. It was EXCITING. Oh man, I just love Eyeshield 21. ~returns to downloading more of the Death March story arc~ It amuses me how excited I can get over a series involving football. XD I can remember a time when I wouldn't even touch a sports manga.
( 8 more cards from this set. )
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Eyeshield 21 is currently consuming my soul. ♥