After a short presentation of lattice QCD and some of its current practical
limitations, I review recent progress in applications to phenomenology.
Emphasis is placed on heavy-quark masses and on hadronic weak matrix elements
relevant for constraining the CKM unitarity triangle. The main numerical
results are highlighted in boxes.Comment: 18 pages, 14 postscript figures. Plenary talk at ICHEP 2002, 24-31
July 2002, Amsterdam, The Netherland