Scripting ps and grep

If you've worked in Unix for any length of time, you're probably familiar with psg or some such variant. Psg stands for "ps through grep" (essentially a ps query whose result is piped grep). It works and works well, but sometimes you need more than just a process string; sometimes you want the process string AND the process ID (PID) — separated. Oh yes, and since we're compiling a wish list here, how about the operation simply telling me how many processes match a given target string. I'll show how to do all of that — and do it without having to run multiple ps commands and filtering those results through several piped operations.