My two favourite printed shorts look from Luella and Biba. These printed shorts adds just the perfect touch to the otherwise very standard tops. 
Some more prints from Alice + Olivia (left), DVF (top right) and Forever 21 (bottom right). And the trick to making them not look like those printed beach surf shorts? Make sure they are of a structured cut and that you wear it with something of a simple style in a solid color that compliments the print of the short. Yes I know, its a very challenging thing to wear.
Something slightly more easier would be plaid prints, as on the Max Sports(left) and Luella (right)(well, its kind of plaid) runway. It makes an outfit instantly preppy and cute. Pair with slim sneakers for a more down to earth look.
Here are some selections from Abercrombie (top left), American Eagle (bottom left) and Juicy Couture (right). I daresay, you've probably seens a LOT of these about in the stores lately. One of my friends was also considering getting the ones from A&F, but alas it was $50 back then and didn't seem really worth it. Now its a very thin line between wearing these shorts and wearing your boyfriend's shrunken plaid boxers. Remember to wear something very clean cut and solid on top. You can even style it up with a pair of heels.
For something a little more subtle (which I prefer more), try more subtly printed plaids, like this one from Abercrombie (left). But I am especially loving this one from Forever 21 (right) with its plaid cuffs.
Then there are the more or less classic striped shorts. The stripes from the D Squared (left) and Derek Lam (right) runway are more boldly and sharply contrasted than we are used to. Again match it with something simple and solid (like a white top). And for some extra oomph, throw on something of the same color as the colored stripes of your shorts. i.e. red striped shorts with the red bag (left).
To achieve the same casual look there are these striped shorts from Mulberry (left). And a bit less sharp, striped shorts from Abercrombie (right). Have fun with printed shorts!