UCSD has several good coffee shops on campus, although they’re really only open 9-5 M-F. UCSD students on a whole seem content to just go to Starbucks for coffee. I imagine the rent in the UTC area is pretty high, which keeps out your more interesting coffee shops, although “Wired” isn’t bad – It’s off near the 805 on the other side of Towne Center Drive near Le Peep.