Dan, I have used junks of hot dog for bait. It works pretty good for catfish in lakes and reservoirs. I live in Fruita Colorado next to the Colorado river and use shrimp and crawdad tails as catfish bait on the river. I drift them through ripples leading into deep pools. Especially works well in early Fall. Those channel cats really smack it!
Being from Nebraska and never fishign for trout until I got here I thought this was the strangest bait, the first time I went fishing here was with my girl's parents. When we got to the lake I was asking what they used for bait and they pulled out marshmellows like the hot chocolate kind. I was like errrrr. But I followed along put a marshmellow on and 2 salmon eggs and in my line went. Little less then a min I had reeled in my first trout, I then caught about 15 that day. I still think marshmellows are weird.
Iv'e used hot dogs to catch crawdads, but never thought of trying them for catffish bait. The strangest, if you'd consider it strange, bait i have tried was probably another catfish's liver, just out of curiosity to see what would happen. I also have tried chicken hearts and gizzards, but gizzards are tough to get on a hook.