In the past I have had problems enabling this hack (TP specifically), because it would screw the colors up. However, it seems to work fine on the TP2, and everything looks a lot better with ClearType on:
To enable ClearType in Landscape mode:
HKLM\System\GDI\ClearTypeSettings\OffOnRotation = 0 (DWORD decimal)
To disable:
HKLM\System\GDI\ClearTypeSettings\OffOnRotation = 1 (DWORD decimal)
Source:
http://wiki.xda-developers.com/index...5_Tweaks_Other