Kevin "Silent Bob" Smith

Season 4
Kevin Smith first appears at the end of season 4 when he is filming a movie "Jay and Silent Bob Go Canadian, Eh" at DCS. During his stay in Toronto he helps out some of the students, makes out with a drunk Caitlin, and  pulls some strings to get her show "Ryan's Planet" back on the air, if she wants to take the job in LA that is.
 

Season 5
Kevin Smith returned to Degrassi to promote the "Jay and Silent Bob Go Canadian, Eh" movie premiere. While there he overheard Alex and Paige's problems and gave Paige advice.