I try to hear Marian McPartland’s Piano Jazz on the radio as often as I can, but it’s on at an hour in our area where I usually tend to forget it’s on until it’s too late.
The last few times I checked their website the shows weren’t archived, but today I have been listening to several new ones that are.
For people who never heard Ray Charles doing straight-ahead piano work, spend an hour listening at this site.
There are some other good shows available, too. Michel Camilo is also very good.