Firstly, in my recent post about the new .Net DateTimeOffset class I mentioned that I would love to see the SQL Server team include this type in databases. My wishes have been answered, we can expect to see this type and some other very interesting additions in the next CTP/Beta of SQL Server 2008. Unfortunately, all of our clients have bought into SQL Server 2005 and won't be interested in upgrading anytime soon so I'll have to find a new project to try all the new toys.
Secondly, also in a recent post I complained about the CollectionBase type being left behind when generics were added to .NET 2.0. I've since discovered the new Collection<T> class tucked away in the System.Collections.ObjectModel namespace. It doesn't offer all the events that the previous equivalent did but it is inheritable and overridable so it should do the job nicely. I obviously didn't search very hard for it all the other times I looked; very embarrassing.