I'm watching DigitalRev's "How to Get Bigger Than Full Frame" video again, and I really enjoy Kai's panorama photos! https://www.youtube.com/watch?v=38plXCYCvKQ
Watching this video makes me want to go on the streets right now and try it myself. My OM-D EM-5 can do a 16:9 in camera, so I think it's something worth trying one weekend or so. Of course, I can shoot full resolution at 4:3, but I think it's really neat to take a WYSIWYG approach on framing. Taking photos in a 1:1 aspect ratio, for example, is super fun to do! Things like the rule of thirds don't really apply as much in 1:1. 1:1 is also really fun when you emphasize lines and shapes!