Don't think ive seen that one yet. Though I may have forgotten. Not sure what my fav is, but the Death Note parody is probably the most memorable for me. Can't believe they made a whole ep of that, great stuff. My fav scene is probably still the DBZ scouter parody.
That was good too, but this was the one where Yamazaki was sent by Hijikata to spy on Gintoki when he was injured at Otae's dojo. Then it pretty much turns into a fortress when Gintoki tries to escape, and they both get stuck. Hijinks!
And Kondo covered in honey was pretty hilarious the first time I saw it.