I found a couple of very useful PDF tools that people might like. Go to http://www.noliturbare.com/
and take a look on the PDF Tools menu. The two I found most interesting are PDF Cropper and PDF Tiler. The PDF Cropper crops all of the extra white space out of a PDF file. PDF Tiler does what you expect, tiling a PDF file, adding cut marks for each page. It can also add an overview page showing how the pages go back together.
So here is my process for generating a PDF plan from Sketchup:
Set camera to parallel projection
Click top view
Click zoom extents
Resize window to hold plan
Figure out full size of plan in inches
Click File->Print Setup
Select Cute PDF
Choose B&W or color
Choose Postscript Custom paper size and click Edit Custom Page Size
Set page size big enough to hold full plan, not just 8.5x11
Set resolution to 300 dpi (good enough for printing)
Check and uncheck Use Model Extents
Set Scale to 1:1
Set print quality to Draft
(# pages should be 1 to 1 since page size is set to full plan)
Click OK to print and save the PDF file.
Run PDFCrop to clean off the extra white space
Run PDF Tiler and output to Letter size, including cut marks
This seems to work well and it eliminates the extra white space that I get when I try to have Cute PDF tile the file.