  We discuss the panchromatic properties of 99,088 galaxies selected from the
SDSS Data Release 1 spectroscopic sample (a flux-limited sample for 1360
deg^2). These galaxies are positionally matched to sources detected by ROSAT,
GALEX, 2MASS, IRAS, GB6, FIRST, NVSS and WENSS. We find strong correlations
between the detection fraction at other wavelengths and optical properties such
as flux, colors, and emission-line strengths. Using GALEX, SDSS, and 2MASS
data, we construct the UV-IR broad-band spectral energy distributions for
various types of galaxies, and find that they form a nearly one-parameter
family. For example, based on SDSS u- and r-band data, supplemented with
redshift, the K-band 2MASS magnitudes can be "predicted" with an rms scatter of
only 0.2 mag. When a dust content estimate determined from SDSS data by
Kauffmann et al. (2003) is also utilized, this scatter decreases to 0.1 mag. We
demonstrate that this dust content is indeed higher for galaxies detected by
IRAS and that it can be used to "predict" measured IRAS 60 micron flux density
within a factor of two using only SDSS data. We also show that the position of
a galaxy in the emission-line-based Baldwin-Phillips-Terlevich diagram is
correlated with the optical light concentration index and u-r color determined
from the SDSS broad-band imaging data, and discuss changes in the morphology of
this diagram induced by requiring detections at other wavelengths. We study the
IR-radio correlation and find evidence that its slope may be different for AGN
and star-forming galaxies and related to the H_alpha/H_beta line strength
ratio.
