Trinity; my degree was in maths, and when that finished I did the one-year DipCompsci. (Partly as a means of delaying the inevitable onset of full-time work, and partly because I suspected there were gaps in my extensive self-taught computing skills which might be filled by a formal taught course.)
Nothing that would have seriously impacted my ability to do a programming job, as it turned out; no enormous gaping holes. But there were plenty of little things I hadn't happened to encounter before, such as some of the finer points of computer graphics, a proper understanding of NP-completeness, functional programming and so on. I found it to be a mind-broadening experience and thoroughly enjoyable. (And the project I did probably resulted in me getting my current job, so even if none of the above had been true it might still have been worthwhile on that basis alone!)
Cool - I probably ought to have known that, in fact, and now you say it it does ring a bell. I was wondering if we'd overlapped, but it doesn't sound like we did - I was at Clare doing (vanilla undergrad) CompSci from 1992-1995.
I matriculated in 1994, so we overlapped temporally for a year, but first-year mathmos and third-year compscis wouldn't have had that many opportunities to overlap spatially. Er, as it were.
OOI, which college were you at and what were the two subjects you did?
:-)