Inspired by `pman`, `sman` in Ask Different: http://apple.stackexchange.com/posts/5461/revisions

pdfman.sh

# Bash function (Mac OS X specific) for getting man pages 
# in PDF visualized in Preview.app
# Tryit with `pdfman man`, `pdfman curl`, or `pdfman bash`, for instance.
pdfman() {
	outname=/tmp/man-"$1".ps
	man -t $1 > $outname # get PS version of man page in /tmp
	if [ -s $outname ]
	then {
		open -a Preview $outname
	} 
	fi
}

# similar command, to open clean manpage in TextMate
mateman() { man "${1}" | col -b | mate; };