You can try m.youtube.com on your cell phone, but be prepared: if you don't have an unlimited data plan (and in Canada, it's extremely unlikely that you do) it's going to cost you your first and second born. Proceed with caution.
mashable.com said:Although previously displaying a “coming soon” message, it appears that the m.youtube.com site has now gone live, providing more convenient access to YouTube from mobile devices. It carries a warning, too: “YouTube Mobile is a data intensive application. We highly recommend that you upgrade to an unlimited data plan with your mobile service provider to avoid additional charges.”