Forwarding from Google Apps to Gmail: Well-Nigh Impossible

The Problem:

You can't forward mail from a Google Apps account to a Gmail account.

My main email address is a gmail address. I administer some domains with Google Apps set up on them. It would be great if I could just forward all that email to my main account. Alas, this doesn't seem to be possible. I even tried forwarding from Google Apps to Hotmail (which did work) and from there to Gmail. No go. It is impossible for mail to get forwarded from Google Apps to a Gmail account.

Well, almost impossible.

The Solution:

In order for the forwarding to work, you have to whitelist email addresses under settings->"accounts and import"->"send mail as". Any address you can send an email as, will get forwarded to your account. Pretty much kills the utility of a catch-all address, but it's good enough to prevent me from changing email addresses.