2015-2016 Rose Bowl trip. The game sucked, the stadium is way over-rated and sucks, but we went the the 2nd-to-last ever Motley Crue concert at the Staples Center which was all kinds of awesome.
2006 Outback Bowl against Florida. Tampa/Ybor City was fun, game sucked, Florida fans suck, refs sucked, but met some LSU fans on NY Eve in Ybor City and they were loads of fun. They just happened to be there, LSU was beating up on ND that bowl season someplace else, I recall.
I'd take Tampa over LA if I had to pick one to visit again.