If you go to Yosemite, make sure you check out Glacier Point. It is incredible and has some of the best views of Half Dome in all the Valley. You also get to see Yosemite Falls and Royal Arches really well. It is just a few miles down the road from Sentinel Dome so if you are going to do that hike, you can easily come do this after. Both can be done in half of a day.
Check out my adventure here:
https://www.youtube.com/watch?v=qRMcFrEe20A