Taking my kids (5&9) to the Philadelphia
Zoo on my daughter's birthday.
Are there any "fun" restaurants in Philly
where we could celebrate my 5 years olds
birthday?
Thanks

There must be something better than Chunky Cheese.

Try Spaghetti Warehouse at 11th & Spring Garden Streets for reasonable prices, good food, and great for kids. There is free parking in their lot around the back. It is just north of center city (downtown). Tell them about the birthday and they will sing (loudly) and you might get a free piece of cake, too.

Dave and Busters has all sorts of games. It can get loud in there. Check out their website and see if it's what you're looking for.
http://www.daveandbusters.com/?f=1

There are a few restaurants that cater to kids/families on South Street. Are you from Philly? Your kids would probably like South Street. There used to be a store called "Hats in the Belfry" on the street, but I don't know if it is still open. They sell all kinds of crazy hats. I know my kids used to love going down to South Street.