I've seen a few pics of celebrity runners floating around and I've read the headlines of celebs doing marathons this year. I've never understood people's obsession with fame and famous people. However, the effect that obsession has on different cultures, brands, etc is pretty amazing. Below are some pics of celeb runners (not joggers!). Edward Norton looks like he's working a sub 8 min pace while Matthew McConaughey is working out with a weight vest on! Madonna and friend are doing it like rock stars and Jessica Biel and Justin Timberlake are trying to fly under the radar.