I absolutely love ska, ska shows are some of the most amazing concerts you can experience.
I saw streetlight manifesto countless times, I've seen Big D and the Kids Table play at all the shitty local venues in my state, one time the power went out in the middle of their set and they kept playing with only drums/horns and the whole crowd screaming the vocals.
I used to listen to lots of punk bands also, favorites include NOFX, Anti-Flag, and Bad Religion.