- You could enter on an ESTA, which gives you 90 days. If you leave the US (Can+Mex doesn't count) and come back, the counter re-sets. Note that you're not allowed to work on ESTA, which means that drawing a salary is a no no. But if you desperately wanted to, you could probably figure out how to get paid in your home country or whatever would work for you.
- E-2 visa. A lot of EU countries have a treaty with US which says that: if a company is A) majority (>50%) owned by people/groups from your home country and B) someone from the country (doesn't have to be you) has invested ~$50K-250K (equity, not debt) in the company, then the company can apply for an E-2 visa for their key employees. It takes 1-3 months to process from what I hear, and the investment is substantial, but it's at least one more route that is available.
If anyone has more info on the two above, please feel free to correct me - I feel like I learn new things about the E-2 every time I speak to a new lawyer.