In the same vein as today's "Writer's Block" prompt on LiveJournal ("Same Name"), here are a few other people and things with similiar names...
Ken Levine: There's the TV comedy writer and the video game designer. I met the former at last year's Sitcom Room, and heard the latter give the keynote speech at last year's PAX. They're both quite accomplished in their respective fields.
Chocolat/Chocolate: One is the Academy Award-nominated 2000 film directed by Lasse Halström and starring Juliette Binoche and Johnny Depp. The other is a 2008 Thai action movie featuring "[a]n autistic woman with powerful martial art skills" (IMDb). Don't get them confused when you're at the video store.
John Sheppard/Jack Shephard: John is the officer in charge of military operations on Stargate Atlantis. Jack is the Doctor who makes bad decisions on Lost. And there are, apparently, way too many Jesus freaks naming TV characters these days.