KingTutATL, can you clarify what you mean by your question? Why do you single out "Bio, Chem, Bio/Chem, etc." and call them "great"? I've been told that medical-school admissions committees do not discriminate among applicants on the basis of their majors. I was a math major, and, as far as I'm aware, I was the only pure-math major from my school who applied last cycle. I'm not sure if this helped me, but it didn't seem to hurt me in any visible way. Interviewers frequently asked me how my interest in theoretical math was related to my interest in medicine. They also asked me to explain my math research to them, which was frustrating because it was impossible to explain it to them concisely in terms that they could understand. I'd recommend the math major to anyone who is interested in it, since your classmates are likely to be down-to-earth and non-competitive, your teachers won't be super-harsh graders, and it's a exciting contrast to the pre-med courses you'll have to take. The downside is that you'll probably be "out of the loop" (i.e., you probably won't be in on the latest pre-med gossip and will have to resort to an online forum like SDN to satisfy your needs). Furthermore, your math professors may not be very understanding or supportive of your pre-med ambitions, since they're not accustomed to teaching pre-meds. Also, it's hard to get a job in a bio lab if you're not a bio major, so if you want to work in a lab, you may want to major in bio instead; the only term-time jobs available to pure-math majors, really, are teaching jobs. I would guess that the computer-science major is similar to the math major except more employable. So, if you're interested in computers, I see no very compelling reason why you shouldn't major in CS.
Also, if you take all the pre-med courses and buy an MCAT prep book, I think you'll do fine on the MCAT regardless of what you major in. I mean, I only took three semesters of bio, all pretty introductory stuff, and I turned out ok. Just study hard, and you'll be fine no matter what your major is.