First, there's something I have to admit up front: I'm not a fan of tv vids. Seriously, I see all these vid recs floating around for various fandoms and I check them out and I just don't get the appeal. Clearly there's something I'm missing, but vids tend to leave me cold. All of which boils down to this: you aren't going to see much in the way of vid recs here and when you do, it's probably not going to be in any of my fanfic fandoms.
That said, OMG, I've just discovered the coolest vids *ever*! They're all based around the same conceit: movie trailers that are completely misleading. For example, a well-known horror movie recut into a romantic comedy trailer. Or a children's movie edited to look like it's actually a horror movie. Gah. I can't explain in such a way that truly encompasses the awesomeness of seeing a trailer of When Harry Met Sally as a psycho thriller, so I'm just going to give you the link and tell you to check it out. Trust me, you'll get a laugh out of it.
All of the vids below are on YouTube.
When Harry Met Sally -- the Horror Remix
Shining (The Shining as a romantic comedy)
Scary Mary (Mary Poppins as you've never seen her before!)
Sleepless in Seattle (apparently romantic comedies are just rife with horror cliches...)

Comments
But what I really wanted to say was that I absolutely have the same difficulties as you regarding vids. Mostly I just shrug and go 'So what?' But there are a few where I understand what the vidder wanted to express and these work just right for me. In TS it's a vidder named Sally who did this funny little vid called 'Coffee Time' and I absolutly adore her 'Jim Dandy'.
I'm guessing you and I saw the same original post for the remixed trailers -- I have no shame in reccing something I've seen recced elsewhere:)
Here's Sally's website:
http://www.sseymour.net/
Best to watch Jim Dandy first and Coffee Time second, because - although they're not related - they make sense that way because of Jim's last remark in Jim Dandy!
She even has a new one that had me hooting with laughter!
And Coffee Time has been nomed for the Light My Fire Awards. You know the LMFA-website?
http://lmfa.diagonalfiction.com/currentnoms.php
BTW, the Scary Mary trailer reminded me that when I watched that movie as a little girl I was scared near to death by the scene where all the other nannies were blown away... :bibber: