The Pentagon delayed strikes on Iraqi TV because it hoped
to use the network after the war. That target should have
been one of the first.
This got a little delayed, such that by the time you read it here, Iraqi TV has already been taken down by US forces. It's also worth noting that this piece comments about the US military not expecting guerrilla tactics and how resistance has been stiffer than expected; as far as I can tell, these assertions are false.
The military never claimed to expect a cakewalk, and they have consistently stated that they are not at all surprised that Saddam's troops would employ guerrila tactics.
On the other hand, both of these factors clearly suprised TV commentators and journalists, so the error is forgivable.