Richard Costall of NxtGenUG has just sent through the details of an implementation of Manic Miner, the old Spectrum Classic, that has been completed in Silverlight.  I started with the C16 and C64 and never had a Spectrum but will be looking forward to having a go with this.  If you had a Spectrum or loved the game, this is a must.  Here are the details from Richard:

NxtGenUG Silverlight Manic Miner
http://www.nxtgenug.net/manicminer

NxtGenUG Co-Founder Richard Costall & Member Pete McGann are pleased to announce their “Silverlight” Manic Miner game Beta is now live on the NxtGenUG site. Manic Miner was originally written by Matthew Smith, under games company Bug-Byte in 1983. The game was a landmark title in the history of gaming.

The original classic features 20 caverns to negotiate, and Pete and Rich had lovingly created 9 of these so far, with more to follow shortly.

Silverlight Manic Miner shares a custom built ‘time based’ engine with an XNA version of the game. A library of c# files is shared between the two systems. The Silverlight edition is also integrated into the NxtGenuG site, through Application services, and registered visitors can have their high scores recorded and shown in a leader board which refreshes every 60 seconds.

Pete and Rich will be telling their story at NxtGenUG Coventry on August  11^th 2008

Silverlight, XNA and Gaming
Matthew Smith did it in 6 weeks in the early 80's, now over 20 years later Pete McGann and Richard Costall have built Manic Miner in .NET, with an engine which works for Silverlight and also XNA. In this session Pete and Rich, talk about the .NET engine, implementations and issues on the two platforms - before Pete steps up to take the ultimate gaming challenge...
http://www.nxtgenug.net/ViewEvent.aspx?EventID=136