Found a nice Reverse Image Search tool

http://www.tineye.com/

You can upload a photo or point to a URL and it attemps to find similar images.

pdf / magazine search and Issuu

Google's pdf option is very useful to find pdf files/magazines, I created a query in the compact format.

Also Issuu (for publishing) is very nice, although not all publishers also have PDFs on their site, I've put it under the pdf category.

http://www.google.com/ie alternative

It seems that it is still possible to use the nice interface if you replace

http://www.google.com/ie?q=

by

http://www.google.com/search?output=ie&q=

Fixed for now.