Ubuntu and PVR / Digital Television

[Nick]

Hi,

Looking at buying a combination PVR (personal video recorder) and
digital TV reciever. There are units available from places like Dick
Smith, etc, from $200+ 

Was wondering if anyone has had success in using linux/ubuntu for this
purpose? Is there a guide or kit list online that anyone can endorse? 

Would like to be able to recieve both the free-to-air analogue and
digital TV chanelns (in Standard Def is fine) and also record the
shows... i presume i'll need some kind of remote or at least a wireless
keyboard. 

Or is all too hard and should i just go with the appliance from Dick
Smith? Topfield 4410.

Nick.