If you enjoy beer as I do, a trip to Brouwerij 't IJ is worthwhile. Nitai and I were thinking of going to the Heineken Brewery, until Robino told us of this much more interesting, and Dutch, Brewery on the East side.
It took about 25min. to bike from the house.... very easy to find: Just head East, along the zoo, then look for the windmill.
If you want the tour of the brewery, you'll have to show up on Friday, otherwise, it's always good for a quality beer between 3pm and 8pm.