Please identify this PBS kids show!!

This is driving me crazy. Someone must know this.

I specifically remember a PBS show... I believe it aired on Sundays... about a guy with a beard who, I *think*, lived on a farm. He had a dog named Blue, who was a puppet. I can't remember anything else about the show, except that there was an episode where Blue got sick, and the guy carried him to the vet. On the way home, he sang a song about how many miles from home they were.

I can't find a damned thing about whatever this show was, and it's making me bonkers. Someone must know.

EDIT - The guy's name *may* have been Jack. I'm not 100% sure though, that just popped into my head. I think the guy used his real name for his character, and his name may have even been in the title of the show.

I dream of Jigsaw.... THANKS, MOM.

Yeah, it finally happened. I finally got the sign that I've seen the "Saw" franchise too much. I had a dream about it.

I was in some warehouse full of traps... I wasn't actually in any of the traps, but other people were. Yes, the creepy man himself was there (somehow *not* dead - I assume my dream took place before Saw 3) and... selling DVD's of his own movie series. Yeah, I didn't get that either. Anyway, the dream ended with me asking Jigsaw if I could have a "Saw" themed birthday party. Man, that'd be sweet... I could just be all like, "I wanna play a game." And weird people out.

But anyway, I'm placing the blame for this bizarre dream all on my mom, without whom I never would have seen those movies to begin with.