Is there a way to block access to or wipe my Google data for a lost/stolen phone If my phone was ever lost or stolen, my only real concern is data and apps associated with my Google account, such as my Gmail, the ability to purchase apps from the Market, and maybe Picasa albums.  

Is there a way to block access to these Google associated programs if I change my password or do something else with my account?  

I would also be interested in any solution that remotely wipes my Google data.  I know remote wiping questions have been asked before, but I feel that my question is a little more broad, in the sense of overall protection of data in which wiping is a possible answer.

FYI, I'm running a Gingerbread-based ROM on my Samsung Galaxy S (AT&amp;T Captivate).
EDIT: I now personally use AndroidLost. In addition to everything listed below, there is also an AndroidLost Jupstart app that will launch the service remotely if your phone is already lost without any locating software on it. It's pretty sweet:


Read SMS'es
Read the latest SMS'es from your phone and send them to your email.
Remote control alarm
Have you ever misplaced your phone which was put on silent mode? Now you may sound the alarm on your phone from your PC!
View on map
Find the location of your phone on a map. With AndroidLost you can find your phone with GPS precision. Even if the phone is indoor you will get a nearby location by network accuracy.
Send SMS'es from your PC
You can send SMS'es directly from your phone by typing them on AndroidLost. All replies will still go to your phone.
Lock the phone
You can lock and unlock the phone from the web. If you forget your pincode you can simply overwrite it or remove it by entering an empty pincode on the web.
Wipe the phone
Don't want your personal messages in the hands of anyone else? With AndroidLost you may wipe the entire phone so all SMS'es, contact and google setup is removed.
Pop up messages on the phone
Send a message to the friendly guy who have found your phone so you may let him know where to give it back.
Forward your calls
You can send keys to the dialer of your phone. That way you can forward your calls from your mobile to a nearby phone.
No battery use
AndroidLost will not use any battery since it does not poll any server to find out if it is lost. It uses the latest technology from google to send messages to the phone.
No pre installation required
You didn't install AndroidLost on your phone? No problem! You can push the AndroidLost app to your phone from google market and initiate the connection to googles servers by sending an SMS with the message "androidlost register" to your phone.
Read status
Detect how much battery is left, display IMEI, SIM card ID and much more.
SMS commands
You can set up a phonenumber which can control you phone, i.e. start the alarm by sending an SMS to your phone.
Erase SD card
Click a button and your SD card will be erased! Very useful if you have some naughty pictures on your sd card.
SIM card changed
When the SIM card is changed an email will be sent to the owner of the phone.
Hidden SMS
When the phone receives an SMS it plays a sound and displays an icon in the notification bar. But if it starts with androidlost it will not play any sound and not display any notification.
Call list
A list of incomming and outgoing calls will be sent to your email.
Camera
AndroidLost can take pictures with the front facing camera in case the phone is stolen. Only for android 2.3.
Tablets Honeycomb
I think I have fixed it so AndroidLost works on tablets. The call functions will obviously fail if the tablet have no phone installed.
Text to speech
You can make your phone speak out load. Suppose you have lost it on a café then you can make the phone say: 'I am lost - please pick me up!'
Multiple phones on the same account


Here are some others you can use:

SeekDroid does the following:


Locate your device
Remotely Enable GPS
Display its location on a map
Audible alarm (even on silent) w/ custom message
Lock device w/ custom code
Retrieve recent calls
Remotely wipe entire phone
Remotely wipe SD Card
Hide from app drawer
Disable App from being uninstalled
Virtually no battery drain
Works without a SIM Card
Reteive SIM ID, IMEI, and active phone number


and WatchDroidPro does the following:


Get your phone position (by network or GPS)
Retrieve current SIM information (useful when someone put another SIM card in your phone)
Share your position to friend
SIM substitute protection
Make it ringing even if the ringer is off
Wipe data
Lock your device


All of these should do what you're looking for :)