TiVo is a basic DVR thing right?
It records TV, and pauses it... or am I missing something?
If that is the case, then most computers (including Macs) can do it. Whether they are using Windows, Mac OS X or MythTV. You just need TV tuners and drivers.
You are missing something
The TiVo allows for recording of programs through a variety of methods of input. For example I can use tv.yahoo.com to tell which of my TiVo's to record which programs, and which programs should be 'preempted' in order to make room for my new ones. This is a function that I'm sure can be done with myth TV so I'll continue...
It also allows to -rate- the programs that you watch or that are on TV. So I watch a lot of Seinfeld and The Simpsons. I give them up to three thumbs up...depending on how much I like them. The TiVo, if it isn't busy recording something I've told it to record, will then seek out programs like Seinfeld and The Simpsons to record...and places them in a folder for me to check out if I have time. So lets say my TiVo picks up Family Guy <puts flame suit on for this> which I can't STAND. So I give it three thumbs down and delete it. My TiVo will never record it again.
But then it records other shows that I like, that, if I have the time, I can watch. Like an old favorite, Cheers...maybe Futurama. Shows that I like but not enough to fill my TiVo hard drive with them (all 750gb for my new TiVo HD!!!). So I give them between one and two thumbs up but don't set a recording for them.
The 'season pass' feature is one that I wish I had on my Moto 8600...season pass will record requested shows even if they change days and times on me. Maybe I forgot about the hour special...it'll grab it anyway. My moto box seems to be nothing more than a VCR with a hard drive.
This -may- also depend on the software the box is running. I'm sure there are some out there that prefer their cable boxes. Fine by me.
My TiVo box(es) can be upgraded by me. Something that I could do with also MythTV box, but not with my cable co box.
Amazon unbox downloads of TV shows and movies at iTunes or less prices...
I could go on, but I'm sure I'm boring. I look at it like I do my mac switch. After you have one, it wouldn't be fun trying to switch back. I'm sooooo glad that the TiVo HD is out, and at $299!
joneSi