HR21 HD DVR, you too can join your HR20-owning brethren in the DirecTV on Demand fun. Reportedly, nothing is "new" here, per se, and it is still technically in beta, but it seems that just about everyone in the DTV community now has access to DOD. So, HR21 users, how is it? Feel free to sound off in comments below, and if you're still unsure what all the fuss is about, try looking for an OnDemand option in your menu (and celebrate once you spot it).
[Thanks to Earl and everyone who sent this in]