I started listening often right on and following 9/11, because the NPR station was the only one on the radio that would provide constant coverage. And then I found that the NPR coverage was so much more thoughtful than what was found on TV. I learned that NPR was the best broadcast source for news. Hearing BBC News on my local station is also a nice change from time to time. And then there a good number of programs I have come to enjoy quite a bit, even if none of them are quite "appointment radio" for me: Wait, Wait, Don't Tell Me; Fresh Air; Splendid Table; This American Life; a few others.