I played the steam free trial-weekend (I think it was called "Freaky Friday" or something) and it was awesome. My graphics card was craptastic so all of the zombies I killed kinda floated instead of dropped + disappeared quickly. I found it really fun, especially the ability to use my microphone. I actually made two videos using Fraps of it. Win. Movie Maker screwed up and deleted half of my second movie because of some time exceeding.
Anyways it was fun. Was playing with a guy named PooNoodles and two others named CanadianFrachizit and In Memory.
Favorite gun = Mac 10. Why not anything else? Because of high rate of fire and I like to empty alot of bullets into a zombie before they die so I can watch them go UNG UGH OOG and flop like a fish. It also gets the maximum amount of blood (actually, kinda tied for shotties).
Favorite zombie to play as: Hunter or smoker because they are agile and quick, and if used properly, can cause a tremendous amount of damage. Example of smoker is grapping a survivor and pulling them off a ledge so no matter what they fall or die. Kinda fun watching people scramble to find ways to get him/her up without falling!