There are some decentish movies coming out this summer, the overwhelming majority of which are franchises. Hollywood knows how to ride a horse until it drops. That being said, I am looking forward to the following corntastic flicks: Bourne Ultimatum, Evan Almighty, Oceans 13, Spider Man 3, Pirates 3, Harry Potter 5, Shrek 3, Fantastic Four 2. We typically watch dramas, comedies (and the less spectacular) on our big screen at home as you don't necessarily lose much compared to the multiplex.
Those listed deserve at least one theater viewing. We watch most movies at home and typically enjoy the experience more without the added multiplex frustrations (noisy kids, tiny seats, rigoldarndiculous food prices, etc.), but there still is something special about a screen so big you can't take it all in without panning your eyes left and right. I'm a big fan of IMAX, and I would probably go see more regular films in that format but they never offer them in the markets where I live (thanks Army, no really, thanks).