Get 1 row per GROUP

How do I get the latest UpdateDate for each UpdateUser?

This gets me the list, but I want to limit it to 1 row (the first row) per user.
SELECT UpdateUser,UpdateDate
FROM Subscription
GROUP BY UpdateUser,UpdateDate
ORDER BY UpdateUser, UpdateDate DESC



CREATE TABLE dbo.Subscription(
 SubscriptionID Integer Identity(70291,1) CONSTRAINT SubscriptionID Primary Key Nonclustered,
 SubscriptionDesc VarChar(255),
 UpdateDate datetime DEFAULT GetDate(),
 UpdateUser VarChar(50) DEFAULT suser_sname())
GO
INSERT INTO Subscription(SubscriptionDesc) VALUES ('A')
INSERT INTO Subscription(SubscriptionDesc) VALUES ('B')
INSERT INTO Subscription(SubscriptionDesc) VALUES ('C')
INSERT INTO Subscription(SubscriptionDesc) VALUES ('D')
INSERT INTO Subscription(SubscriptionDesc) VALUES ('E')
INSERT INTO Subscription(SubscriptionDesc) VALUES ('F')
INSERT INTO Subscription(SubscriptionDesc) VALUES ('G')
UPDATE Subscription SET UpdateUser = 'psenn' WHERE SubscriptionDesc='C'
UPDATE Subscription SET UpdateUser = 'psenn' WHERE SubscriptionDesc='D'
UPDATE Subscription SET UpdateDate = '1/1/1900'  WHERE SubscriptionDesc='B'