1) Y Combinator Series AA: http://ycombinator.com/se
2) Series Seed: http://www.seriesseed.com
3) TechStars: http://www.techstars.org/
Yokum Taku does a great job at comparing them and explaining pros and cons of using these vs. using a lawyer: http://www.startupcompany
The cool thing about these 3 sources is that they are a set of documents, i.e. they can take you from term sheet and all the way through to closing the investment round.
For a bit more complex and later stage docs you can see:
4) Wilson Sonsini term sheet generator:
http://www.wsgr.com/wsgr/
5) Orrick term sheet generator:
https://tsc.orrick.com/de
6) The Funded: http://www.thefunded.com/
If you want more reading on this topic you can also check out these links:
http://techcrunch.com/200
http://www.seriesseed.com
http://www.startupcompany
There was quite a debate back in Q2 2009 around this topic and you’ll be able to find lots of views from then. Reading these articles helps get a really good understanding of the contents of the docs and you can then form your own view on how you take your funding documentation process forward.