Having to do both CRA (Canadian Revenue Agency) and IRS/Indiana DoR filings, I find that whole 'Paperwork Reduction Act' thing is quite ironic.
The first couple of years I had to do US tax filings (through an LLC), it took me a month or so to get the accounting the way I needed it, and to figure out through the massive maze of forms which ones I had to fill out and how I had to fill them out.
Now, with the exception of filing to get my withholding tax back, it takes about an hour after I've got my accounting all in order. I've got it down to a system of completing electronic PDF forms (6 forms for the IRS, and another 5 or 6 for Indiana), printing them out, and then signing two of them. So, now it's mostly stress more than anything. But good God man...why so many forms? And lengthy ones at that.
CRA's are mostly a couple of pages...the odd one might be three.