Sony PSPgo Easter Egg - "Happy New Years!" Message

We all know that when you close your PSPgo, while turned on, it remains in an idle state, displaying the time on an analog clock, as well as the day of the week and month. However, I discovered this egg on New Years with my new PSPgo.

On New Years day, close your PSPgo as normal, however, in addition to your typical clock, a message will briefly appear, then dissipate from the screen.
"Happy New Years!" it will read.
This is the only time-based PSP egg I have found so far, but there may be others, so keep your eyes peeled :-) Happy 2011 everyone!