GRAND GRADUATION: Wesleyan University's 176th Commencement ceremony on May 25 awarded 737 undergraduates bachelor's degrees, 29 master of arts degrees in individual fields, 64 master of arts in liberal studies degrees and 12 Ph.Ds. Commencement speaker U.S. Senator Barack Obama (D-Ill.) spoke spoke about challenges graduating students faced from the daily "busyness" of their own lives to the needs for clean renewable power, more teachers for disadvantaged children, to rebuilding New Orleans. To Senator Obama's left is James van B. Dresser '63, chair of the Wesleyan Board of Trustees; to the Senator Obama's right is Michael Roth '78, president of…