Tips for Newlyweds

"To have a truly successful marriage, both people should share common interests."

Name the celebrity couple to get public kudos from me!

Hint: There was a true-crime movie made about them, starring Laura Prepon.

Update: No more guesses! Smackie Chan comes through with the I.D. on Paul Bernardo and Karla Homolka, a couple of fresh-faced Canadian pranksters.