Friend is traveling to Boston this week - what should he haul back?

Long time lurker, first time submitter to /beer.

I wanted to see if anyone had any suggestions for brews that we might not be able to find in the Chicago area that he could bring back for us to taste.

Edit: This is a pretty extensive Google Docs spreadsheet someone shared with me. I think it's worth sharing for any other travelers. I just set MA to Y and IL to N and magically it told me what I needed to know. [A nifty tool for those into beer that travel] ( https://spreadsheets.google.com/spreadsheet/lv?hl=en&key=0Ap6d1DIcENXqdHgwd3ZNeTJBellDWFpuQTRKR0FiekE&hl=en&f=true&noheader=true&gid=0&pli=1).

Edit #2: Someone took that spreadsheet and put it into this website [seekabrew.com] (http://www.seekabrew.com/#).