Have just received word from the Public Theatre that there will be a 22-minute segment on Macbeth featuring Jennifer Ehle, Lynn Cohen and Moisés Kaufman. It's airing at 7.35pm EST "tonight" on ABC's digital cable - not sure if that means Wednesday night or Thursday night. If the former and you've missed it, it will also be on broadcast ABC stations from 3.05 to 4.30am EST. Apparently it can also be watched online at the ABC site but can't find it.
Sorry about the late notice.
[edit: crapola, there was an interview with Liev Schreiber on Charlie Rose as well, Wednesday night. Hopefully it'll go up at Google Video]