Maybe I'm weird (and I've been accused of that before), but I can't think of a single beverage that tastes better to me through a straw.

All cold drinks taste best (to me) direct from a glass (and, I mean one made of glass). Hot coffee, tea and cocoa taste best drunk directly from a ceramic mug. I can't think of any other hot drinks I've had recently, but I suspect I'd pick the ceramic mug for them also.

That's probably because the bubbles are naturally popping and putting lots of it in the air. When you drink from the cup you get more of that air, with the straw you don't.