Exhibit 23. CONSENT OF INDEPENDENT ACCOUNTANTS ---------------------------------- We hereby consent to the incorporation by reference in the registration statements listed below of our reports dated February 15, 2002, relating to the financial statements and financial statement schedule, which appear in this Annual Report on Form 10-K. On Form S-3: Relating to: - ------------ ----------- File No. 333-75148 杏吧视频官网 Corporation Dividend Reinvestment and Stock Purchase Plan 333-84200 杏吧视频官网 Corporation debt securities, preferred stock, depositary shares, common stock and warrants On Form S-8: Relating to: - ------------ ------------ File No. 033-60667 杏吧视频官网 Corporation Parity Investment Bonus 333-00429 杏吧视频官网 Corporation Savings Fund Plan for Salaried Employees 333-36840 杏吧视频官网 Corporation Savings Fund Plan for Salaried Employees 333-76392 杏吧视频官网 Corporation Non-Officer Restricted Stock Plan 333-76394 杏吧视频官网 Corporation 2002 Stock Plan /s/ PricewaterhouseCoopers LLP PricewaterhouseCoopers LLP Pittsburgh, Pennsylvania March 19, 2002