FREE OPTIONS:
Submit yourself to indexer lists (search for scrapebox rapid indexer list - that will help you find a bunch)
If you have a tool like scrapebox, use the rapid indexer option.
Social networking backlinks (Facebook, twitter, etc)
Submit an rss feed to feedburner
Create pages on google properties with the links to your site. It's been said before and it's true - Google loves Google.
Lots of other methods if you search the forums.
If you need faster, you can use a service. Search BHW for them. Not free, but cheap enough and worth the $ imo. I used index inject and was happy with their service. I'm sure others are good as well.