With the new update to Super Mario Maker coming next week allowing you to see world records and first clears on the bookmark website I thought it might be good if anyone with a level they think is good for speed running could post it here. Or if you have any levels that still haven't been cleared then I would be willing to give them a go.
To get things started I thought I would share my world record strategy for @danryckert's If The Boo Fits.... No Boo's were harmed in the making of this video ;) There is also room for improvement as I messed up my P-switch jump, so I think around 3-5 seconds could be shaved off.
UPDATE: Here is my completion videos for The Ryckoning and The Giant Bomb Level 3: Doable!
It is possible to get to through the door 3 seconds quicker than I did in this video, so there is definitely room for improvement.