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I'm constantly finding myself writing itty-bitty try blocks like such:
process stuff
try : someSubProcess.kill()
except : pass
process stuff
I realize this isn't a rigorous use of except, but it's good enough for a vast majority of what I need it for. Still, it adds excess verbiage and makes code slightly harder to read.
All I need except to do most of the time is suppress exceptions. I think the language could be enhanced by making the except clause implicit.
the above would become:
process stuff
try : someSubProcess.kill()
process stuff
The intent remains clear. The code is cleaner and easier to read.
This does not happen often in rigorous code, but grep does find 3 counts in standard modules and 9 counts in numpy. I'm certain most prototype code (like mine) would greatly benefit. (My current 300 line project uses 4 so far.)

FWIW, this is already easy to do with decorators:
>>> class Pass:
	def __init__(self, exc):
		self.exc = exc
	def __enter__(self):
		return self
	def __exit__(self, exctype, excinst, exctb):
		return exctype == self.exc
	
>>> with Pass(IndexError):
	'hello'[10]

No way this is going to be in 2.7.

Please submit your idea to the python-ideas list.