Fat Albert

After going to see Bill Cobsy (himself), and learning that the character of Fat Albert was based on Doris' (Kyla Pratt's) late grandfather, Fat Albert (Kenan Thompson) realizes the real reason he came out of the TV set was to help Doris believe in herself. The next day at the school's track meet Fat Albert gives Doris a boost of confidence and she wins the race. Fat Albert goes back into the animated world and the final scene takes place in a graveyard, showing Bill Cosby and the "real" junkyard gang paying respect to Fat Albert at his grave.
Thanks, Derrick D!