Those who are as sick as endless cosmic crossovers as I am doubtlessly find Howard The Duck #5 to be an amusing treat. The whole issue is a send-up of every story-line that holds no other purpose than throwing a bunch of heroes at some random new villain in the hopes that you'll slap down your sheckles for a few pages worth of your favorite hero doing something awesome. And Chip Zdarsky milks the scenario for everything it is worth, complete with caption boxes telling you which comics the characters are referring to in their conversations- some of which are actually real!
This humor continues into the artwork itself. There's a number of hilarious sight-gags built around various things the "real heroes" are doing in the background while the focus shifts to other characters. Full praise to Joe Quinones, Joe Rivera, Paolo Rivera and Rico Renzi for a fantastic looking issue!