Is it just me, or does the name of the show suggest a possible sexual harassment lawsuit?
In all seriousness, from what I've been able to gather of the show, my impression is that it for the most part it's a trite and feel-good TV show that has captured the attention of CHristians just as "Highway to Heaven" did 20 years ago because of its use of familiar phrases and symbols like God, heaven and angels.
The show does actual angels -- and the faith -- a disservice by lowering them to our level and turning them into creatures whose sole purpose is to make a tidy little conclusion at the end of the episode every week. Angels in the Bible appear only rarely, and when they do, their appearance generally is terrifying rather than beautiful and serene.
When the angel appears to Samson's parents, they fall to the ground, terrified. David sees an angel of God with his sword raised across Jerusalem and he's struck with fear. When Gabriel appears to Daniel, everyone else runs away in a panic and Daniel himself would have, but he was too weak from praying and fasting for weeks on end. The Apostle John has the same reaction to the angels in his visions at Patmos.
That's not to say angels have to be terrifying. Mary accepted Gabriel's appearance with faith and didn't run away screaming, and the angels who met the disciples and the women at the tomb seemed fairly low-key -- but even so, these cases illustrate another point that shows a problem with "Touched by an Angel" and society's current level of angelmania: Angels don't want attention drawn to them.
In the case of Mary, she responds in faith to God's message; because Zechariah doubts God's promise -- not because he doubts an angel -- he's struck mute for nine months.
I suppose it wouldn't make for much of a TV show if everytime Monica or Sam or Rufus the Angelic German Shepherd showed up, people fell on their faces in fear or ran away screaming, but there you have it. It would be nice to see just one episode like that, although you'd probably need someone like Eric Idle or Michael Palin to write it.