Manchester Orchestra opening for Brand New and Kevin Devine in march 07 and then MewithoutYou opening for Thrice and Brand New in october that year. that was my first exposure to KD as well, but his stuff has yet to resonate with me like MO and MwY's does.
All the above. Finallyyyy giving KD a fair chance now though.
Oh and As Tall As Lions on Mute Math's most recent tour. I am so hooked on them now its not even funny.