Instead, here's a simple Terminal command to get a list of all of your Intel-ready apps in one go:
2>/dev/null find /Applications -type f -perm +111 -exec lipo \
-info '{}' ';' | grep -w i386
One important thing to note: some applications might contain more than a single executable, having various helper programs. That does not necessarily mean that the main application itself is also Universal. Toast 7, for example, comes with a Universal binary helper utility, ToastImageMounter, while the main application itself is PowerPC-only.
What you are looking for are lines for the main application, eg. (line break added for narrower display):
Architectures in the fat file:
/Applications/iTunes.app/Contents/MacOS/iTunes are: ppc i386
On my iMac G5 running 10.4.4, I found that only Photo Booth, iTunes 6.0.2, QuickTime 7.0.4 and various Java settings utilities are already Universal, alongside with a handful of free apps: Fire, Service Scrubber and SubEthaEdit. Of course, the new Intel-based systems ship with an OS where all the basic apps are Intel native as well.

