I have always used a keyboard for platformers and will always use it (probably).
And because of the risk of getting shot in the face, keyboards aren't better than controllers. 

[:]

100% Walkthrough (Golden God Achievement)
If anyone is interested/needs it, go watch it.  

Edit: Uploaded an improved 100% walkthrough of SMB. Click the link!

@merg
But it's really difficult....
If you don't believe me how hard this is, try it yourself.
I can upload the replay if somebody wants to see it ^^

I did try it myself, the only hard part was the one with the missiles because I never concentrated on them. After I tried to completely spam the "jump button", it worked and from there on the sawblades didn't bug me anymore.

[recorded it lol]

Yesterday I finished the game once again 100% recorded it lol and this time I only got 813 Deaths.   
It's amazing how easy most of the chapters are after you did them once.
I died the most in The Rapture Dark World. It also took me several hours, unlike everything else.    I hate that freaking chapter. 

Can Flywrench even beat 5-20x?

Why wouldn't he be able to? The first part is almost made easier becaus he can 'fly' over the sawblades (you just have to time it right so that you aren't too slow). The next part is easy, the missile part is no challenge and then the last sawblade isn't hard either because of the reason I mentioned earlier.

what the hell is the point to them lets play videos?

They're entertaining.

Really thats all? for both the uploader and viewer... same answer? nothing to do with Narcissism or sycophancy?

Well, for the viewers it should be entertaining, whether it's someone suffering or someone saying random stuff while playing to not let us get bored. I watch Let's Plays because without them, eating would be boring as heck.
I don't know really about the uploader: Maybe he enjoys talking while playing, he can't shut up or he wants to corrupt our ears.

what the hell is the point to them lets play videos?

They're entertaining.

[Forest / Hospital / Factory / Hell / Rapture / The End / Cotton Alley]

  - Got it easily
  - Got it
  - Frustrating, but got it
  - Will Probably get
  - Not sure
  - Will Probably not get
  - NEVER
  - You're Joking


                       Forest / Hospital / Factory  / Hell  / Rapture / The End  / Cotton Alley
Light World:          /          /         /     /         /           /        
 Dark World:          /          /          /    /         /           /      

[The Kids Xmas]

I recorded my first time playing The Kids Xmas chapter (in one session), getting The Golden Gift achievement. I now have two long videos (both together take about an hour). I don't know, is that bad? 

You can find Part 1 here and Part 2 here.

[{]

First time through I got 6574 deaths {Golden God (106%), negative Levels and some 'No Deaths' achievements} 

Mine is Isaac + D6, but I like Cain with his Lucky Foot aswell. He's definitely my second favorite character.

Now if I wanted a challenge, I'd use ???.

So I recorded myself getting the 'No Death Run Achievement's, Light World. I've gotten all of them (except Cotton Alley  ).
If anyone's interested, here's the link:

http://www.youtube.com/playlist?list=PLA7CD0D576ECE4B45&feature=view_all