While I'd like the existence of a built-in printer view as well, there is the workaround provided by blakem outlined in this node and implemented on http://perlmonks.thepen.com/. His page caters to search engines, but mostly, it just has the right sidebar removed, which makes the pages (more) suitable for printing than the "original" pages here. I don't know how stylesheets would affect his pages, but maybe you could craft a stylesheet and apply it to his pages to get a perfect print page.
perl -MHTTP::Daemon -MHTTP::Response -MLWP::Simple -e ' ; # The
$d = new HTTP::Daemon and fork and getprint $d->url and exit;#spider
($c = $d->accept())->get_request(); $c->send_response( new #in the
HTTP::Response(200,$_,$_,qq(Just another Perl hacker\n))); ' # web
