http://xlengine.com/
Provides for the modernization and modding of some really great classic titles! Daggerfall is of particular interest to me, being a huge Elder Scrolls fan.The XL Engine allows you to play several classic games with modern technology. Support is in varying states at the moment but include or will soon include: DarkXL (Dark Forces), DaggerXL (Daggerfall) and soon OutlawsXL (Outlaws) and BloodXL (Blood).
An impressive (old) video of terrain rendering can be found here:
http://www.youtube.com/watch?v=NwTWrdB6vIU
A picture showing how nice seamless UI can be created with 'webUI'