Yeah, that one made me really happy when i saw it. Really gave you a picture of how everything's gonna be all right for Bobby.
The series finale is awesome. That flashback of Hank with Bobby as a baby gets me..
My favorites -
The one where they became Fire Fighters. 
Buckley's angel was great. Funny. It makes you think a lot about life..
Dale's gay dad. "Oh, my turn? ... YUP."
The one where Dale quits his job to fire people.
Joseph seeing Luanne naked.
The one where Hank poses as "Mr. Big" and Dale uses pocket sand. "Mr. Big is pleased... " 
Bill's cousin comin to visit. "I do declare.."
Hank fishing with Crack.
Hank becoming a pimp.
Boomhaur's brother.
Peggy smuggling in cocaine to a prisoner.
The one where the whimpy guy snaps and tries to KILL Hank.
The one where they all (Hank, Bobby, Peggy) get addicted to cigarraetes.
Hank going to Japan.
Debbie getting 'written off'...
Bill trying to kill himself. "Why do you keep calling me BILL?"
The one where the town is flooded and Hank gets blamed.
The one where peggy poisons a guy with a brown betty.
Hank getting a job at the Mega-Lo-Mart. And..
Hank afraid of propane. I lol'd at the support group.
"That's my purse, I DON'T KNOW YOU!"
Boomhaur finding his car.
The one where Chuck is hiding in the Mega-Lo-Mart.
Luanne starts dating the Larsen Pork Products guy.
Dale realizes Joseph's father might be an alien. But he learns to accept that he's his dad NO MATTER WHAT.