Young and relatively nearby Galactic SNRs offer the possibility of relatively
high-resolution investigations of SN ejecta and SNR/CSM interactions.  I will present
a brief overview of some recent X-ray, optical, and IR results on core-collapse SNRs.
My talk will concentrate on work on some on young Galactic collapse SNRs, with an
emphasis on the Cas A remnant which has been the focus of several recent Chandra and
Hubble Space Telescope observations. In particular, I will present HST images which
highlight this remnant's reverse shock emission as well as its high-velocity
outermost ejecta arranged in nearly opposing NE and SW ejecta streams or ``jets''
producing an apparent bipolar asymmetry. I will also discuss possible correlations
between the large-scale distribution of ejecta seen in young Galactic SNRs such as
Cas A and certain line profiles observed in late-time CCSNe spectra.