Rotate Video

Yes.
Movie Properties window / Visual Settings tab.

But is there a way to rotate video without using Quicktime Pro? (which I don't have)

How can I rotate video using iMovie or Aperture?

How can I rotate video using iMovie or Aperture?

Use the "Crop, Ken Burns & Rotate" window in iMovie '08/'09 to rotate your content.

But is there a way to rotate video without using Quicktime Pro?

You could also use an application like MPEG Streamclip (free). However, like iMovie it requires that the clip be re-compressed for the effect to take effect. This may not be a problem if you are performing other forms of edits anyway or are planning to convert the file to another compression format in the end. The advantage of using QT Pro to change the property is that you don't need to re-compress the content if you don't need/want to do so.

You can do this using TransformMovie, available here:

http://www.macupdate.com/info.php/id/21859

Also, MPEG Streamclip can rotate video while maintaining the aspect ratio as well as the interlacing when converting to DV, which is what iMovie prefers as an input:

http://www.apple.com/downloads/macosx/video/mpegstreamclip.html

Thank you for your response. I am not familiar with iMovie but I've been trying to do as you suggested. Could you provide a little more detail? I can't figure out how to use the crop, ken burns & rotate function. Thanks.

Could you provide a little more detail?

If I assume you are using iMovie '08/'09, then
1) Select the clip or clip segment to be rotated in the "Edit" window
2) Select the "Cropping, Ken Burs & Rotation" Window menu option (or press "C") to open the clip/clip segment in the preview window
3) Press either of the rotation (left or right arrow in upper center of screen) buttons twice to rotate the selected content 180*

Perform other editing as needed.