As someone who has played OW at Blizzcon yesterdat; I have to say that I'm really, reall enjoying it! It's very fast paced, easy going, and not all about putting your cross hairs on the enemy the fastest. It's really different from TF2 in that while Valve's game would rather have you focus on one or two customizeable classes out of a few with many, many different mechanics; OW has you playing dozens of different, easy to learn characters that are all about their special abilities. Looking forward to alpha!
During my two-match session, I started out has Hanzo, then early on I swapped to Reinhardt and Pharah. Pharah is really, really cool on the Anubis map; I quickly found out that if I combined a quake-esque rocket jump with her shift ability that I can traverse the map in a moment, plus stay in the air for some 10-15 seconds or so. Air dodging is an art, and there's nothing like flanking the enemy team from their side of the map and raining hell down on them, only for them to turn around and go WTH when they don't look up. Reinhardt was really fun for leading the charge, and holding out that checkpoint under the bridge and in between the two statues.
Your play experiences?