What you can do is run the plugin vbsupercharged and use it to combine js. Also what I've done is use the defer element on all but these scripts.
Code:
http://www.video-game-chat.com/forum/clientscript/vbulletin-core.js?v=421 (43.5KiB)
http://www.video-game-chat.com/forum/clientscript/vbulletin_md5.js?v=421 (5.2KiB)
http://www.video-game-chat.com/forum/clientscript/vbulletin_read_marker.js?v=421 (3.3KiB)
http://www.video-game-chat.com/forum/clientscript/jquery.lazyload.mini.js (2.5KiB)
http://www.video-game-chat.com/forum/ (2.4KiB of inline JavaScript)
http://www.video-game-chat.com/forum/forumrunner/detect.js (1.6KiB)
http://www.video-game-chat.com/forum/clientscript/sc_thumbs.js (1017B)
http://www.video-game-chat.com/forum/ajax.php?do=analytics&v=421 (1005B)