caredea, you'll find an lovely list at this nicely-titled site: http://www.nobeliefs.com/fallacies.htm

From that site, on your question about appeal to ignorance (argumentum ex silentio): appealing to ignorance as evidence for something. (e.g., We have no evidence that God doesn't exist, therefore, he must exist.) Ignorance about something says nothing about its existence or non-existence.¹

In other words, argument ex silentio does not, as you'd surmised, mean requiring that arguments be supported by evidence. Quite the contrary: it means the attempt to support one's argument by the very absence of evidence.

I particularly enjoyed bandwagon fallacy:
concluding that an idea has merit simply because many people believe it or practice it. Simply because many people may believe something says nothing about the fact of that something. For example many people during the Black plague believed that demons caused disease.

¹Another site defines "argumentum ex silentio as an argument based on suppressing something", but this seems to me mistaken.