What are the best things to do at Inner Harbor, Baltimore?

Such as stores, restaurants, places to hang out with friendsWhat are the best things to do at Inner Harbor, Baltimore?
I was just there at a conference so I didn't have a lot of free time but the aquarium was great. I suggest pre-purchasing your tickets though b/c the day we went people were buying their tickets for entrance like 3 hours later. Tons of shops and nice restaraunts, there is also a science museum and a childrens museum within walking distance of the harbor. There were paddle boats and stuff to rent out in the harbor. The ESPN zone was pretty cool, they had pool and bowling, games and such as well as a bar and food. Eat at Phillips (it's a seafood restaraunt) and have the crab cakes! We stayed at the Sheraton, it was really nice.What are the best things to do at Inner Harbor, Baltimore?
there are many stores, restaurants and the like there. there is also the aquarium, boat rides, camden yards if you like baseball. Fort McHenry is there.