Why didn't Michael Dell replace Kevin Rollins six months or a year ago as the chief executive of the company that bears his name?

Dell Inc. (Nasdaq:DELL) has been in trouble for a long time. Did you ever think that Hewlett-Packard Co. (Nasdaq:HPQ) would ever gain the lead in the PC market? H-P made better machines. I replaced my Dell desktop with an H-P. It wasn't a tough decision.

Shares rose on news of the ouster of Rollins, who got the CEO job in 2004. Bloomberg News points out that in September, Dell called Rollins an "outstanding executive."

Somewhere along the line Dell lost its way. Maybe Michael Dell can restore it to its former glory but it won't be easy. Its accounting is under investigation by both the U.S. Securities & Exchange Commission and the Justice Department. Wall Street is still seething that the computer maker has missed profit forecasts including the one for the fourth quarter.

24/7 Wall St. has generated a list of public company CEOs where investors in the underlying companies would likely be better served by a new CEO. While this may seem aggressive, some of these aren't actually calling for the CEOs to be fired. The difficulty in calling for new new leadership is that in many cases there is an issue as to who would be the replacement candidate. How many Jack Welches and Lou Gerstners are there in the world? Taking the Six Sigma class and studying under them only goes so far.

This list is put in alphabetical order by company name. Calling a guy the No. 1 needing to go versus the No. 3 is too subjective, and as a reminder, some of these CEO change suggestions are nominal in actuality and execution. This list and brief note is a mere summary of the full article.

Amazon.com's (AMZN) Jeff Bezos. He doesn't need to go away entirely! He just needs to do a partial title change. But will anyone inside the company tell the emperor he is wearing no space suit?

Citigroup's (C) Chuck Prince. The prince calls for Draconian measures, and maybe the prince didn't mean just THIS Prince.

Dell's (DELL) Kevin Rollins. Rollins may survive since the stock has recovered. If the stock falls back again, Wall Street has already telegraphed a true Michael Dell Inc. would be better again.

Eastman Kodak's (EK) Antonio Perez. Maybe he's nice, but for heaven's sake get the restructuring over with and get some mojo. Bring in a digital media leader.

Gap Inc.'s (GPS) Paul Pressler. Every generation may have one, but his generation gap has helped the Gap to alienate customers and send them to competitors.

Home Depot's (HD) Bob Nardelli. Does anyone on Wall Street respect him? Just because he was one of the runners-up to run G.E. doesn't mean he shouldn't change his name to Richard.

Qualcomm's (QCOM) Paul Jacobs. He isn't being sent home yet, but his dad's shoes are proving very hard to fill.

Sirius Satellite Radio (SIRI) & XM Satellite Radio (XMSR). It is a dead heat in the race, and if two companies need to merge, it's these two. There can be only one.

Wal-Mart's (WMT) Lee Scott. The company is struggling under its own weight, and it needs some good PR. Getting rid of the Darth Vader of Corporate America and bringing in someone fun and likeable would be the best start.

Yahoo!'s (YHOO) Terry Semel. Yes, when you see him leave or forced out, Yahoo! holders should be happy.

A lot of these may be controversial, and there are plenty of other companies which might benefit from a new CEO. None of these attacks are personal and these are merely based on observation and analysis. The list could probably be 100 CEOss long.

Jon Ogg is a partner in 24/7 Wall St. LLC; He does not hold securities in the companies he covers. He also not been compensated to represent any of these companies in any light.