Since its inception in 1981, IEEE INFOCOM has been bringing together a tremendous and rich diversity of authors from universities, government and industry. The popularity of INFOCOM as the premier forum for networking research continues to grow. We are very proud of the final INFOCOM 2005 program, which includes 61 high-quality regular paper sessions, 3 panels on both timely and challenging issues in networking, 8 instructive tutorials and two inspiring keynote speeches. This year, 1419 papers from 44 different countries were submitted to INFOCOM. The submitted papers cover virtually all aspects of networking research. The paper selection was handled by an outstanding Technical Program Committee. Each paper was rigorously reviewed by at least three Technical Program Committee members, although some papers received as many as five written reviews. Based on the referees' comments and ratings, the Technical Program Committee Co-Chairs made a preliminary cut, accepting 110 ("clear accept") of the top papers and rejecting 909 ("clear reject"). The remaining 400, having mixed reviews, were discussed at our TPC meeting at Rice University in Houston on October 16. We had an excellent TPC meeting with high attendance (100+) and a hard-working group. 18 Specialist groups ofTPC members were constituted, each responsible for the decision for approximately 22 papers. 134 more papers were accepted at the TPC meeting. Thus, 244 papers were accepted all together by the TPC, which translates into an acceptance rate of 17%. The accepted papers were chosen through a highly competitive but fair process and are truly representative of the state-of-the-art in networking research.