  We present several recent results from the BaBar collaboration in the areas
of initial state radiation physics and transition form factors. An updated
study of the processes e+e- -> K+K-pi+pi- and e+e- -> K+K-pi0pi0 provides an
improved understanding of the Y(2175) meson. A very precise study of the
process e+e- -> pi+pi- improves the precision on the calculated anomalous
magnetic moment of the muon and provides by far the best information on excited
rho states. Our previous measurements of the timelike transition form factors
(TFF) of the eta and eta' mesons at Q^2=112 GeV^2, combined with new
measurements of the their spacelike TFFs and those of the pi0 and eta_c mesons,
provide powerful tests of QCD and models of the distribution amplitudes of
quarks inside these mesons. The eta_c TFF shows the expected behavior over the
Q^2 range 1-50 GeV^2, and we are sensitive to next-to-leading-order QCD
corrections. The eta and eta' TFFs are consistent with expected behavior, but
those for the pi0 are not. Extracting the strange and nonstrange components of
the eta and eta' TFFs, we find the nonstrange component to be consistent with
theoretical expectations and inconsistent with the measured pi0 TFF.
