A nice way to get newlines automatically is to use the -l command-line option. This makes your one-liners even shorter:
Print @INC
perl -wle 'print for @INC'
Print filenames in @INC to pipe
perl -wle 'for (@INC) { print for <$_/*> }' | more
...and so on. -l is great for one-liners like these.