[vetler]

There's always Finnish lakes: http://en.wikipedia.org/wiki/List_of_lakes_in_Finland Might be difficult to pronounce for some, though.

[dugmartin]

I've used this list multiple times for personal project codenames: http://en.wikipedia.org/wiki/List_of_rivers_of_the_Americas

[sdoering]

Funny. I use mythological figures. Right now it's "metatron", and "delphi"...

[jorde]

These are so bad for a software project that they might even work for a codename. And this coming from a Finn.

[chimeracoder]

Even better: http://en.wikipedia.org/wiki/List_of_lakes_in_Minnesota

[xnxn]

I'm torn between Operation "Big Spunk" and "Big Sucker".