re: columbia's messy app a) are you guys including years here? b) with only three lines, are you separating activities w/ a semicolon? c) are you numbering them? d) are you actually describing anything? there's not much room.
i'm thinking of asking a TA and a "lecturer" (at my UG, an instructor who is not on tenure track and not necessarily a phd-- i've actually had 3 seminars with lecturers, but it's not that common) to write my academic recs. is it better to ask at least one full-fledged prof, even if the rec isn't as stellar?