Unlike PowerPoint 2007, it is possible to customize the tool ribbon in PowerPoint 2010 (review). I still use my 2007 workaround in the 2010 version of PowerPoint though. The screen dump below shows those very important buttons that any PowerPoint designer should have always on hand (click for larger image).
- Left, bottom, middle, right, top align
- Horizontal, vertical distribution
- Send to back
- Flip horizontal, vertical