I use a Google Customized Search Engine (CSE) configured to promote StackOverflow and block ExpertSexchange. Here, you can try it out: www.google.com/cse/home?cx=007350804174195462206:7etfz1pyl-s . I've set it as my default search engine in Chrome and never have to think about it again.

You want a Google "Custom Search Engine". Works great for me. Mine omits anything from Experts Exchange and prefers anything from Stack Overflow.