Episode 15 is death takes a holiday
Finn takes his hat off in "To Cut A Woman's Hair" (season 2, episode 10)
http://surfthechannel.com/episode/296/32462.html this site has all the episodes. The link i posted takes you directly to the episode you requested (season 4, episode 5 - the one with joey's new girlfriend)
If I rememeber exactly, it is in season two episode 1.
A little vague but you might be speaking of the time when Peter did cocaine in Season 5|Episode 17 It Takes a Village Idiot & I Married One
It is the season finale episode of season 2 entitled "into the woods"
She does that in the second episode of season four.
"The Duel" Season 5, Episode 11
Season 2|Episode 6 Death is a Bitch
Episode 15 is death takes a holiday
Finn takes his hat off in "To Cut A Woman's Hair" (season 2, episode 10)
Season 8|Episode 11 Dial Meg for MurderJoe also arrests her and presumably takes her to jail at the end of Season 4|Episode 27 Untitled Griffin Family History
Shawn was never stabbed but he was shot in season four episode nine titled: Shawn Takes a Shot in the Dark.
it's season 13 episode 16 when Homer smokes weed its called " Weekend at Burnsie's"
he goes to prison at the end of season 2, alot of season 3 takes place in the prison as well
http://surfthechannel.com/episode/296/32462.html this site has all the episodes. The link i posted takes you directly to the episode you requested (season 4, episode 5 - the one with joey's new girlfriend)
Episode 199 Season 9 - "Death Takes A Holiday"