That Thing There: th3.at

Point at something on the internet!

http://th3.at ? audio/video/image=url # startTime,endTime/top,left,bottom,right

Times can be written as hh:mm:ss or seconds.

(Only works for audio and video right now)

For example:
http://dodoburgers.com?video=http://upload.wikimedia.org/wikipedia/commons/4/4a/Ap17_strolling.ogg#t=0:0:20,0:0:30