I did like Google Suggest. It is extremely helpful for people like my self who are poor at spelling.
I found Google Trends to be really confusing and not necessarily helpful. It was interesting to play with and I'm a big fan a graphs. I'm not sure how well the service works, though, since some of the searches I preformed seemed like they would return more hits.
Google Mars will no doubt be useful for my next extra-planetary excursion.