These are hilarious. I've just subscribed as Celluloid Rebellion, my production company. If I had to offer one piece of advice, it would be regarding the way you start a sketch. I absolutely love absurd humor, and you guys seem to be providing it in spades. The only thing is that if you want your audience on board for when things go awry, you can't lead with the absurd. For example, your perverted driving instructor should appear like a normal dude at first, until we suddenly realize things are going to get very weird. It's much more likely to illicit a laugh this way, too. Of course, you do your own thing and keep making awesome stuff happen. Cheers!
(p.s. here's a link to a Mr. Show sketch that perfectly illustrates the gradual descent into madness https://www.youtube.com/watch?v=Uco5Ed-5y2U)

My personal favorite is a simple match cut from night to day, or day to night. When done right, it works incredibly well.

http://stephenking.com/dollarbabies.php
If you're looking for awesome source material to draw from that's also easy to secure the rights to, look no further.