felipehuggler.com

geo:<lat>,<lng>?z=<zoom>

http://maps.google.com/maps?z=12&t=m&q=<lat>,<lng>
z = is the zoom level (1-21)
t = is the map type ("m" map, "k" satellite, "h" hybrid, "p" terrain, "e" GoogleEarth)
q = is the search query

comgooglemaps://?q=<lat>,<lng>

marker
geo:<lat>,<lng>?q=<lat>,<lng>(Label,Name)