Upside-down exclamation mark in Ubuntu

[James Michael Fultz]

* Chris Mohler <cr33dog at gmail.com> [2009-10-08 20:10 -0500]:
[...typing accented/special characters not shown on keyboard...]
> 
> Check here for more info:
> https://help.ubuntu.com/community/ComposeKey

Thank you!  It had never worked for me, and I had never found out why.
Changing my settings accordingly (I opted for Multi_Key), it works.
Now, I can type those heavy metal umlauts. ;-)