I probably catch about 75-80% of the games each season. This has improved greatly now that I finally have cable with FSN Ohio (we didn't have cable up until a few years ago so I couldn't watch anything but the Fox national games before that). The only times I miss games on TV are when I'm out of town, during the last part of the TV season when my TV shows are airing their season/series finales (usually I just watch that show and then go back to the game...there aren't many nights where there's more than one show I'm following so I still catch most of the game), and I also tend to miss some games in September when my fave shows come back for their premieres. I always flip back to the game during commercials though so that has to count for something, LOL
I've been down to GABP nine times this season (my record: 6-3) and my next game is going to be during the Cardinals series. I haven't figured out which game yet but I only have to find one ticket so that shouldn't be too big of a problem.