As much as I loved Yosemite, one of my favorite areas was the Eastern Sierra from Lee Vining down to Mammoth Lakes. This area just seemed off of the beaten path and in the wide open west. This was a cool little light-sport airplane that I saw at Lee Vining Airport. This airplane was really simple, but looked like it would be great for sightseeing flights or anything that didn't require more than 2 people and the need to go fast.
If you are ever in the sleepy town of Lee Vining, be sure and stop at Nicely's Diner on the main Street through town. The kids said that it was their favorite place to eat on the entire trip and it was much less expensive than anything in Yosemite.