1. Use Google Suggest to get the correct spelling for a word. Type the first letters of a word or write the whole word and if you see it in the list of suggestions, then your spelling is OK. Otherwise, delete some letters from the end of the word.
2. Use Google Suggest to find words you don't remember. You know it starts with "exq" and it means "extremely beautiful", but you don't know the word. It's exquisite.
3. Find popular songs of an artist or band. Type [name of the artist] lyrics and you'll see a list of songs, with the most popular at the top.
4. Find the greatest mobile phones. Just type [mobile phone manufacturer] and a list of models pops in. If you type Nokia, you'll find: 6230, 6600, 6260, 6630, 7610 and others. This is useful when buying a new phone.
5. Find popular car models. Do the same as above: type [car brand] and you'll get a list of models. For Porsche, the most popular models are: 911, Cayenne and Carrera GT.
6. Find popular movies. Most people that want to find a movie review go to IMDB. To do that, search for imdb + title of the movie. To find popular movies, just type imdb and optionally a letter or two. If you type [imdb m], the first title will be "Million Dollar Baby".
7. Find if your site is popular. No one knows why, but many people type URL addresses in the search box. So if your site is download.com or linux.org, you'll find in the Suggest list.
8. You have a commercial software. But is it so good that people try to find cracks to use it for free? If you type [photoshop c], you'll see "photoshop cs crack".
9. Want to go back in time? Type a year in the search box and find popular events from that year, great cars, TV shows. In 1949 film noir was popular.
10. Autocomplete code. It's useful if you use a simple text editor that doesn't autocomplete standard values. If you don't remember the values of the display attribute in CSS, type [css display] and you'll get your answer. It may be display:none, display:inline or display:block. You get the answer instantly without reading a manual or even searching with Google.