  Simultaneous multi-wavelength (MW) campaigns are the most promising
approaches to investigate the still unrevealed nature of blazars, active
galactic nuclei which are variable on all time scales from radio to TeV
energies. In 2008, two MW campaigns on the high-frequency peaked blazars Mrk
180 and 1ES 2344+514 have been organised by the MAGIC collaboration. From radio
to TeV gamma rays, RATAN-600, Mets\"ahovi, Effelsberg, VLBA (only 1ES
2344+514), IRAM, KVA, Swift, AGILE, Fermi-LAT and MAGIC-I were taking part in
these campaigns. Mrk 180 had just been discovered at TeV energies by MAGIC in
2006, whereas 1ES 2344+514 is a known TeV emitter since many years. Due to
their rather faint emission particularly at TeV energies, the campaigns
represented quite challenging observations. In fact, Mrk 180 has not been
investigated until now in MW campaigns, and for 1ES 2344+514 only one campaign
including TeV measurements has been reported in literature up to now. In this
contribution, we will present detailed MW light curves for both sources and
describe the composite wide range spectral energy distributions by theoretical
models.
