Television on DVD has definitely arrived.
There was a time when only very successful shows — or entrenched cult shows — ever made it to DVD. Now you can spend serious money on lavishly packaged box sets of beloved classics, beloved less-than-classics, and even meritless flops no one cared about even when they were free. (Consider last season's straight-to-cancellation Bionic Woman remake: All eight broadcast episodes were released as a two-disc set entitled, with all the never-say-die moxie NBC Universal could muster, "Volume One.")
Obviously, holiday shoppers could go with the simple great TV they know about already. There are new box sets of The Sopranos and The Wire, and there's always the first season of Mad Men.
There are solid comedies, too, like 30 Rock and How I Met Your Mother, a block of which can defang a menacingly bad day. Sometimes "It's a good show" is all the reason you need.
But some of 2008's more interesting TV-on-DVD releases are worth picking up for other reasons entirely. Herewith, a highly selective list: