Wikitup is a freeware program which gives you CTRL-Right Click access to an instant dictionary and search engine, from any Windows program, browsers, word-processors, spreadsheets et al. The cool bits include a live YouTube search and video player, and instant access to Wikipedia definitions for any word you highlight.

I can’t say I’m hugely in love with the interface, it’s a little too fussy and olde style for my liking, but there’s no question that the utility of the program is top notch. I can see it as a real time saver in the right conditions. I’m going to keep it installed on test for a while before declaring it a keeper though.