If you've followed any of my writing here at MMORPG.com, you'll probably know that I'm a bit of a Marvel Heroes fan. I've made the case a couple of times that anyone interested in Marvel and ARPGs should really give Marvel Heroes another look and I feel the recent release of Nightcrawler makes the most convincing case on his own.
I played Nightcrawler at level 60 (level cap) on the test server about a week or two ago and he easily feels like the culmination of all the things Gazillion has learned about hero design over the last year. I can't speak for his viability as a hero in MH's endgame PvE, but his fun factor is simply through the roof.
NC's abilities are just awesome. One ability allows him to teleport into a location and snatch multiple enemies in an AOE before bringing them back to your original point, he's also got an entire line of abilities revolving around stealth, which is pretty novel for the game, and then there are my two favorites: Blink Strike and Brimstone Blitz. Both abilities do an awesome job at showing off the amazing work that Gazillion has put into making NC's iconic rapid teleportation look great. Blitz, in particular, is inspired by Nightcrawler's awesome opening scene in the X-Men 2 film.
Don't take my word for it though, check out this video to see for yourself.