The super frico is a super tasty take on grilled cheese, in fact I just posted a bit about them on the shop's FB site: http://www.facebook.com/pages/The-Calf-Kid/56599653023
In general, here are a few rules of thumb to follow for great grilled cheese:
1. always shred your cheese, this helps it melt quickly and evenly, you'll wind up with a lot less burnt bread.
2. use a heavy pan, like a cast iron skillet and make sure it's heated up thoroughly
3. butter the bread rather than melting it in the pan, this will also prevent the bread from burning
As far as cheese goes, classics like a good aged Gruyere or cheddar are always delicious, but it's also a lot of fun to throw in some unexpected tidbits in there like an aged goat, a little ooey gooey washed rind, or a little blue.
Have fun and enjoy!