If you are looking for a punk ska band, then Streetlight Manifesto is perfect. Not only are they punk ska, but they are incredible. If you are not looking for punk ska, then look into Five Iron Frenzy, or some of The Aquabats earlier stuff (late 90's, early 2000's - by the way on one of their albums, Travis Barker drummed for them before going over to Blink). Another lesser known ska band with this same sort of sound is Jefferies Fan Club (JFC). My favorite ska album is probably Streetlight Manifesto's rendition of Keasby Nights. It really is the essence of a good ska album. I guess just listen to the other bands mentioned, get steady hi hat time, and be very comfortable with playing cymbal time on the off beats (like on the "+" 's. Don't do this all the time but it can offer a really good ska feel).