It has always bugged me about JavaDoc-style comments that it's hard to cleanly separate the name and description so they don't run together when you read the plaintext.  Hyphens are bad since they pollute your generated HTML docs, and putting the description on a separate newline just wastes too much vertical space for my liking...  I often go with a double space and sentence caps, but it's definitely not consistent within the team (as evidenced here!) :-P