Well, no big surprise, Fox has gone and canceled The Tick.
It was pretty much obvious from the start that they didn't think much of it; rather than debuting it on Sunday nights for a couple of weeks to gain an audience (like they do with all of their darling shows), they stuck it against NBC's Thursday night lineup, pre-empted it frequently, and shuffled it to other nights a couple of times without much notice.
So the last episode (Arthur, Interrupted) will air this Thursday. If the fan letter-writing campaign doesn't work, then eight meager episodes will be all that marked the third incarnation of the nigh-invulnerable blue superhero.
Superman had his Kryptonite. Achilles had his heel. But the Tick's nemesis is that slavering horde of network execs who prefer carbon-copies of successful shows to offbeat humor that doesn't follow a predictable formula and doesn't pander to the least common denominator.