By this i think of Common events, that happens time and time again.
Like this:
I was writing a javascript, and i got a bug, i could´nt trace it as was codewise perfectly sound,i looked at the code for hours, did a little adjustment there, and a little adjustment there, but nothing helped.
went away for a good 4 hours looked at it again, and bingo i saw the problem immediately..
thats would be cool, if not, i wish i had stepped away for those hours, before i started using a couple of hours tracing it, and this was not the first time i have done that...
Do you know that feeling

If you like, tell us of your "dejavus"