There aren't any built in that I'm aware of, but you can just define your own (in Darktable it would be a "style"). I have a base style I start with that adjusts the base curve, increases the saturation slightly, applies profiled denoising (a newer feature which is fantastic), lens correction, etc.

A quick Googling for "Darktable styles" brought up the Darktable Wiki page for sharing styles: http://darktable.org/redmine/projects/darktable/wiki/DarktableStyles

The Darktable User Manual section on styles: http://www.darktable.org/usermanual/ch02s03s08.html.php

And from the Darktable Resources page (http://www.darktable.org/resources/):

To create a new darktable style just alter your image the way you want. Then click the button located in the history module in darkroom mode to create a style from the current history stack. In advanced options you can include or exclude single modules. To export or import a new style use the styles module in lighttable mode.

Additionally, when you look at the "Base Curve" Module there are a bunch of presets for different manufacturer "biases" (Pentax-Like, Panasonic-like, etc) which will help you get closer to what you want quickly.