$ touch some\ file\ name.foo 'other file.foo'

$ ls -l *.foo
-rw-r--r-- 1 ysth ysth 0 2007-07-31 20:37 other file.foo
-rw-r--r-- 1 ysth ysth 0 2007-07-31 20:37 some file name.foo

...later...

$ ls -1 *.foo 
other file.foo
some file name.foo