Archive Panic — It's been running for years, and updated daily. Anyone trying to read through it all will likely be never heard from again. Parodied in this strip.
Ensemble Dark Horse — The creator has actually said that the Allosaurus (whose only lines consist of him saying "RAAAAAAAAAAAAAAAAAAAAAWR!" with varying notations) has become a lot more popular than he thought it would. It eventually becomes president.
Fridge Logic: Hold on a second. If the IW! universe was destroyed by a massive explosion during the crisis crossover... how is possible that another masssive explosion somehow rebooted it back into existence?
Harsher in Hindsight: Sort of. If we consider rays are close relatives of sharks, that gives us a lot to think...
This strip. A major Temporal Anomaly ends up occurring in not only this theme, but in almost all of them. It ultimately results in the destruction of the universe. It gets better.
This strip. A footnote added years later notes the hilarity.
strip.