Liriano's slider (when he was healthy)
Johan Santana's change
That guy coming through the Dodger's system's - can't remember his name; help me out? - curve.
As was previously mentioned, Ben Sheets' curveball is filthy... I saw him strike out 18 in Milwaukee and it was snapping off like a foot and a half... guys were just waiving at it.
Also... I've always been a fan of a good slit-finger... Hideo Nomo was great... Jose Contreras when he has it going has a wicked splitty...