Go to wikipedia.com and search the day you were born (not including the year) and click 'births'.
I share the same birthday as:
J.C. Chasez, American singer (*NSYNC)
The Edge, Irish guitarist (U2)
Scott Stapp, American singer (Creed)
Lüpüs Thünder, American musician (The Bloodhound Gang)
Dustin Hoffman, American actor