Salesforce: JavaScript Remoting- A Different Way of Thinking
@wesnolte
A few examples of how JavaScript remoting differs from “normal” Apex and Visualforce.

Create Custom Objects and Fields with Spring ’12 Schema Builder
@metadaddy
Video outlining the new features in Schema Builder Spring ’12.

Mobile SDK Webinar Recording and Code
@cloudysan
The Mobile SDK webinar is now available for viewing; learn about the current mobile landscape, their strategy going forward, and how to use Mobile SDK to develop really awesome mobile apps.

APEX Trigger to Prevent Duplicate Object Records
@SalesforceGirl
Duplicate records and contacts is a huge Salesforce no-no, use this trigger to prevent them.

Detecting the sObject Type of Id’s from Ambiguous Fields
@SalesforceGirl
How to accurately check if you are dealing with a User or a Group sObject in the OwnerId field.