I was watching something on the Foodnetwork last night, and one of the stories was hidden valley ranch salad dressing... and how people put it on everything.. including ice cream... Now, i'm with ya on puttig it on frech fries... but ice cream? blech.. :D

I'm a big fan of toasted cheese and pickle sandwiches with mustard. Doesn't seem weird to me but my friends look at me funny. Another good one is peanut butter and bacon.

Yup, my dad loves peanut butter and bacon sandwiches. I just can't imagine using bacon in place of jelly so I pass whenever he offers.

This probably doesn't sound so strange 'cause it's not a mix of sweet and savory, but...
cheetos in a faux-bologna and mayo sandwich on fluffy, processed bleach-white bread
also, cooked broccoli dipped in mayo, yummmers