Personally, I'm not a huge fan of captioning on sports events when watching them myself just because they can lag behind and take up too much of the screen. Of course, I'm extremely glad they're there, but I usually don't have them on. But commercials - I am a big fan of captions on commercials. I have missed so many punchlines to commercials because they weren't captioned!
I'm looking forward to watching the Super Bowl on Sunday - and maybe I will be able to catch more of the jokes this time.
From the National Association of the Deaf:
The deaf and hard of hearing community has engaged in an annual ritual of counting the number of captioned commercials and network promotions during the Super Bowl. Consumers are invited to join in this celebration by counting along as we reach our 100% captioning goal. The NAD is interested in learning about any technical issues that affect the pass through of captions to consumer's television sets.