Search in YouTube
Right-click on some selected text and find results in Youtube
Play drums on your keyboard (letters only)
Right-click on some text and find its image with Google image search.
Search in The Pirate Bay
Right-click on some selected text and find results in The Pirate Bay
Currency rates on web pages
Wikipedia to Google Images
Add a link in Wikipedia web pages to open a new tab with Google image search.
Error 404 Wayback Machine
In case of 404 page, checks automatically for an archived copy in the Wayback Machine.