Server Name Indication (http://en.wikipedia.org/wiki/Server_Name_Indication) allows the use of individual SSL certificates on virtual hosts without dedicated IP.

However, looks like it's still new and needs further support... Especially from cPanel...

References:
http://forums.cpanel.net/showthread.php?t=83661 (need registration)
http://gentoo-wiki.com/HOWTO_SSL_Ena...ts_with_Apache
http://forum.ducea.com/discussion/17...ingle-real-ip/
http://www.g-loaded.eu/2007/08/10/ss...th-mod_gnutls/
http://www.howtoforge.com/enable-mul...on-debian-etch
https://dave.sni.velox.ch/