Special font characteristics

Scrolling text:

<marquee>Insert text here</marquee>

Which looks like:

Insert text here

Blinking text:

<blink>Insert text here</blink>

Which looks like:

Insert text here

You can then go on to changing font size, color and style by using the <font> codes.
Here's an example:

Insert text here

These tend to make myspaces gimmicky and amateur if used incorrectly (eg: huge text in flashing pink)