I started using OneNote this year. I create a weekly "Note" where I throw all my notes in during a week. This includes a weekly ToDo checklist, a note section per meeting, and then random thoughts, code/log snippits, or whatever else I need.

It's not perfect, but it's the best solution I've found so far. I've tried every note taking method out there and I always fall off after a few months. I think this is working for me because it has the quality of a general wiki, but I start fresh every week, so I don't have to worry about carrying over or linking "knowledge" for the most part.