Spoilerless
Rather than give you a blow-by-blow account of everything that happened in the movie, I'll just give you a quick run down of what I liked about the movie in general. Cool? Okay, let's go!

The worst thing about X2 is the subheading of X-Men United. It's about as corny as Attack of the Clones. But, that being the worst offense the movie has to offer, it's extremely forgivable. X2 is easily a much better movie than the first X-Men movie.

Guten Tag
Alan Cumming's Nightcrawler totally stole the show for me as a diehard fanboy. Hell, even my girlfriend really dug him without any prior knowledge of the character. The script and Cumming were perfect in bringing out both Nightcrawler's playful side and his spiritual side without seeming forced. Even the "BAMF!" teleporting sound effect was a perfect translation from the comic book!

Sexpionage
Mystique deservingly got tons more screentime... and not just because she's mostly naked. The script did a great job of bringing out the espionage side of the shape-changing mutant while maintaining her sex appeal.

Coooooool Cameos
Bobby Drake a.k.a. Iceman played little more than a cameo role in the first X-flick, but ended up with plenty more screentime in the sequel. Lots of nifty little ice effects throughout the movie.

Speaking of cameos (okay, this is spoilerish), Colossus was AWESOME in his brief time on the screen and I'm chomping at the living-steel bit for more! The even briefer appearance of Hank McCoy (The Beast) made me positively giddy. Kitty Pryde was denied sufficient screentime AGAIN! Jubilee is visable for a couple of seconds. Banshee's daughter Siryn was a little bit of a surprise. And lastly, there's a non-cameo that also had me in a fanboy-delerium: you'll BRIEFLY see a list of names in the movie; you may recognize a few including Remy LeBeau a.k.a. Gambit. Tee hee! (WHOA! Just checked out IMDB and it actually lists an ACTOR for Gambit!)

Everything Else
While writing this, I find myself shocked that I haven't dedicated more time to Hugh Jackman's Wolverine. But, suffice it to say that he still kicks ass.

I love Ian McKellan as Magneto. Even though he plays a mutant terrorist, he still seems like he'd be a cool guy with whom to hang out.

Professor X, Rogue, and Cyclops were somewhat under-utilized. Storm mysteriously lost her "African" accent.

And Jean Grey... well, let's just say they're setting the stage for a fantastic plotline in X3 that may or may not be based in part on a most popular story arc from the legendary team of Chirs Claremont and John Byrne. Woo hoo!