While we're all deep in the "Man, remember that 2008!" demi-ironic naval-gazing, let's take it further. Remember 2007? Ah, those were amazing days. Remember Peggle Extreme, the Orange-Box-included bonus mini-Peggle game? That headcrab on the unicorns head was funny and similar and... oh, no, can't stretch this out. Peggle Extreme is now free to anyone with a Steam account. If you haven't played it yet for some reason, get it from here.
When the_B told me about this, I told him that I knew about it already. But I didn't! What I was thinking about was the free new level pack for Peggle Nights. So thanks, The_B.