Here's a retrospective look at 2009 via some best and worst lists for 2009.

Top HR Stories of 2009 - Human Resource Executive

20 Breakthrough Business Ideas for 2009 - Harvard Business Review

Best Business Books of 2009 - Fast Company

Top 25 Blogs for Workers Compensation and Workplace Issues - Lexis Nexis

Top Ten Risk Management Lessons and Trends from 2009

Top 10 Work Life Culture Stories 2009 - WorkLifeNation

World's Best Companies 2009 - Business Week

100 Best Companies to Work For - Fortune

50 Best Places to Work - Glassdoor.com

5 Worst Co-Workers of 2009 - MSN Careers

Worst Bosses of 2009 - eBoss Watch

Top 10 Health Stories - Harvard Health Letter

Top 10 Medical Breakthroughs - Time

World's 200 Best Universities 2009 - U.S. News

Top Buzzwords of 2009 - New York Times

Top Words of 2009 - Global Language Monitor

Top Twitter Trends of 2009 - Twitter Blog

5 Big Real-Time Web Trends of 2009 - Mashable

50 Best Websites - Time

Year in Photos - Boston.com