Jorma Taccone, Andy Samberg and Akiva Schaffer have done a great commentary which doesn't seem to be anywhere online yet, so here you go. Video is not that high quality sorry. 

Audio Track 1: Commentary 
Audio Track 2: Original audio

FORMAT.......................: M4V
CODEC........................: H264
GENRE........................: Comedy
FILE SIZE....................: 985.2 MB
RESOLUTION...................: 720*436
FRAME RATE...................: 25 fps
LANGUAGE.....................: English
SUBTITLES....................: NONE
RUNTIME......................: 87 mins



Rod Kimble is a naif, a slacker living in a small US town with his mom, his younger brother, and his stepfather whose respect he craves. He also misses his dead dad, whom he thinks was Evel Knievel's back-up. Rod, a man-child, believes that he is a stunt man. When his stepfather needs an operation, with help from his brother and his slacker pals, Rod hatches a plan to set a school-bus-jumping record on his moped. First, his crew and he have to raise money to rent the buses and build the ramp. Trouble is, Rod's inept at his chosen career. Looming failure is complicated by the return of Denise, Rod's next-door neighbor and secret heartthrob, who is home from college. Is public humiliation at hand?