On Thursday’s “Sell Block” segment, Cramer changed his tune on Martha Stewart Living Omnimedia (MSO). He said he is no longer negative on the name and thinks investors should buy the stock. Cramer thinks the stock is strong turnaround play candidate and new CEO Charles Koppelman can transform the company into a merchandising powerhouse. He pointed out that MSO has inked some new merchandising deals with Wal-Mart (WMT), Costco (COST) and a new partnership with KB Home (KBH). Cramer also likes the company’s aggressive expansion abroad. He said wait for the company to report earnings next week and look to buy the stock under $8 a share. The “Clean Tech” sector is poised to be the biggest gainer in 2008. See what our analysts rank as the #1 opportunity today