Tonight should be a good test of how the HR20 handles diversity 
I've got the following in the TODO list:
8:00 - 8:36 (Ch 3) My Name is Earl
8:00 - 9:00 (Ch 31) Smallville
8:36 - 9:20 (Ch 3) The Office
9:00 - 10:01 (Ch 10) Grey's Anatomy
10:01 - 11:00 (Ch 3) ER
It's a good sign that they are all showing up to record. The Ch 3 overlaps with Ch 10 and 31 recordings should put the HR20 to the test.
I've got the following in the TODO list:
8:00 - 8:36 (Ch 3) My Name is Earl
8:00 - 9:00 (Ch 31) Smallville
8:36 - 9:20 (Ch 3) The Office
9:00 - 10:01 (Ch 10) Grey's Anatomy
10:01 - 11:00 (Ch 3) ER
It's a good sign that they are all showing up to record. The Ch 3 overlaps with Ch 10 and 31 recordings should put the HR20 to the test.