Although for most the thing to pay attention to will be the Bayern - Barcelona game, I'm actually looking forward to Salzburg - Sevilla. Barcelona is dependant on Benfica's result and Bayern has nothing to play for, and in both Salzburg - Sevilla and Atalanta - Villarreal games it's a direct clash between these 2 teams.
It's going to be a great CL day for live betting, I'm gonna put 3 games in parallel, open a few beers and lose some money.