There are TV news shows about TV shows and TV stars. There are even TV specials about TV commercials. In terms of ad dollars, television stations are the second biggest ad medium. In the last year, new networks like Paramount and Warner Brothers have signed on a lot of formerly independent stations as affiliates. Networks are a great vehicle for national advertisers, but by soaking up commercial slots on formerly independent stations, the emergence of new networks has so far meant that local advertisers end up paying more for the spots that are left over.
Television is best at covering a market.
If you expect to draw customers from all over your market, TV makes sense. If your appeal is more localized, be sure to base your cost efficiencies solely on the area of the market you're concerned about. Another TV strength is building brand identity. When the big packaged-goods advertisers launch a new consumer product, TV advertising is at the top of their list. Done correctly, no other medium can establish an identity the way TV can.