I didn't get a video of it, but I found out on accident that if you get knocked down from something, like when you get hit by a vehicle, then you wont take any falldamage when landing (even if you fell from a very high spot).
Found out by getting spotted by camera during "psychofan" gig, so felt...
For the Skippy gun, when he says some stuff non-related to his quest (you can unequip him) so his hologram has subtitles of what he's saying, you can switch to a different weapon and the hologram stays (including the light source on the gun), giving a wierd visual effect. It's just a minor bug...