 The Prank War series, which depicts Blumenfeld and Streeter Seidell as they play a series of escalating practical jokes on each other, became popular and led to the two appearing on Jimmy Kimmel Live! in 2009. MTV later hired Seidell and Blumenfeld to host Pranked, a clip show featuring prank videos from the Internet. Outside of CollegeHumor, Blumenfeld has appeared in the short film The Old Man and the Seymour, the television series Louie and I Just Want My Pants Back, and the 2011 film A Very Harold & Kumar 3D Christmas. He also writes for ESPN The Magazine and Mental Floss.
