Some of the obvious ones, if you want a simple desktop, to shut off are
httpd, gssftp, ldap, rsh, tftp, wu-ftp, telnet, xinetd, etc.
If you click on one of them there is a short description. Where obvious, like you aren't on a laptop, then apmd (monitor batter status) isn't needed. Where you are not sure, repost, and I/others will help out further.