What should i gift my dad on his 50th birthday?!
Answers: Find a place in your area (maybe like a UPS store, or maybe Walgreen's or Walmart photo department) that makes personalized items with pictures like mouse pads, coffee cups, etc. Use a favorite picture and a saying like "happy 50th birthday" or something better to fit the picture. They're relatively inexpensive and dad's LOVE this...especially if it's a picture of you and him, or maybe of all his kids, something like that.
Get him prime beef. (ABSTEAKS.COM)
How about a nice single malt scotch? (Lagavulin)
Or a collection of his favorite movies on DVD. (Caddyshack, Animal House, Stripes, The Great Escape, Guns of Navarone)