1. Do you like talking on the phone? Why or why not?
I loathe talking on the phone in most cases. Actually, a correction -- I hate calling people, while I don't necessarily mind chatting with them after the call starts. I think it's partly a fear of rejection, and partly the fact that I'm a very visual person with slightly crappy hearing, and in-person/in-text (email/ychat/zephyr/aim/etc) actually conveys a lot more information to me. The only exception is long-distance relationships/friendships -- then sometimes it's really nice to hear someone's voice, and when I know someone that well, I don't feel nervous/tense about calling, and I can fill in the blanks made by the auditory-only medium.
2. Who is the last person you talked to on the phone?
saxifrage, for coordinating dinner plans. (One use of phone that isn't a big deal -- confirming plans after an invite has already occurred. But I'd rather invite via email.) The call before that was a really strange wrong number, who called multiple times. There was a serious echo going on, and I couldn't understand any of the things they said beyond "can I speak to [name]", so I just told them I couldn't hear them and they went away. I'm not sure if they were speaking English or not...
3. About how many telephones do you have at home?
One, though we really should get a non-cordless for use in case of emergency, since the cordless needs to be plugged in.
4. Have you encountered anyone who has really bad phone manners? What happened?
I don't know what "phone manners" means, really. I don't know anyone who's terribly bad about calling too late, and the only thing other thing I can think of is a few friends who will call on a cell while driving, and won't heed my request to call back when they've pulled off the road.
5. Would you rather pick up the phone and call someone or write them an e-mail or a letter? Why or why not?
Usually email. Don't write letters much -- too slow. I'll call when I need an immediate response, otherwise I much prefer email. (Occasionally I use LJ as a communications medium as well, for issuing invitations and the such.)
(The Friday Five is somewhat like those various surveys -- it's five fairly mundane questions about your life, which may or may not lead to an interesting post.)