I find I watch mostly old movies on TV. Most of the shows are uninteresting and poorly done rehashes of old shows, or stupid reality shows. Seems like everything is either a reality or cop show. The commercials are getting more trashy (especially the drugs that address a certain issue) and more insulting to my intelligence.
Every time I see a show that catches my interest, it is gone after a season (Firefly). Eureka lasted 5, which is unusual.
I keep toying with the idea of dropping cable and getting what I want off iTunes or Netflix, but I am suspicious that the video quality will be degraded. There isn't enough bandwidth for everyone to stream shows at the same time.
I mostly use the On-Demand service, but now they disable the fast forward so you can't skip the commercials. The DVR is the only way to avoid the commercials now, but its too much work to set it up to record everything I want.