Yes, in Season 19, Episode 17: Apocalypse Cow
No.
Don't no SOS
No Bart was not a smoker. However he may have picked up the habit after his show was canceled.
No. Simpson went to war before he ever married, and he died before his 23rd birthday.
Yes she was married to Homer Simpson and they are engaged
No, they were married the rest of their lives.
I don't think a favorite sport has ever been stated. He's been seen playing baseball & soccer.
Your question cannot be answered with the information currently available. "More Famous" is too idiomatic to provide an adequate answer without poll data from various areas & age groups, perhaps even from different socio economic groups. Without any data of this sort there is no way to really determine which person is more widely known to the general populace therefore any answer would really be speculation, opinion and/or conjecture from the individual who answered.
A butterfly because "no-one ever suspects the butterfly" ('Round Springfield': episode 22, season 6)
Pete Wentz married to Ashlee Simpson from 2008 to 2011
yes on season 10 episode 4 (cartoon wars part 2). his voice was played by Matt stone.
Of course he does! One of his loves included Jessica Lovejoy, Reverend Lovejoy's daughter, and one of Marge's friends, whose name was Ruth, had a daughter who he went out with.