I absolutely love XM.
Since I've had it (Christmas '04), I have only listened to regular radio when the local TV news simulcasts at 6 and I am still in traffic.
Generally my favorite stations are Fred, Ethel, Lucy and XM Comedy.
xshub got XM in the new SUV he got last month and i am sick with jealousy over it!
I do Ethel, Lucy, Fred in that order and some Squizz in times of desperation. The 50's is great at times.