I used to study Radio Television & Film. At that time, students were told that they could not expect to get a job in television very readily, and that usually someone has to "croak" before someone else gets hired. Jobs in entertainment, and in many fields are typically acquired via connections.
Keeping that information in mind, the best way to get a job like Samantha Brown's is to do all of the following:
1) Observe her style, and that of others who have similarly successful programs. Combine all of their best qualities, then add something unique and interesting of your own, to differentiate your presentation. Then perfect it.
2) Write/create 1-3 sample shows, featuring you as the host, on site in some interesting places (even if they are local). Utilize your newly perfected presentation skills to make your sample show/travel piece, and the place that you're describing irresistable. Have friends and family critique your presentation, and make adjustments as necessary, to perfect it.
3) Get (Hire for a small fee) a graduate film student/videographer at a local college to video-tape your performance. (Ask him/her if you can see his/her work 1st; the video should not look gritty, grayed out, or shaky; it should be well-lit, but not over-exposed. In other words, the video should be clear.).
4) Create a blog or website, and post similarly perfected videos, and related stories on your site; and, post them on YouTube, in order to get a major following. Networks/Cable companies care about viewers, who will watch their commercials. If you have a large following... you will have a SIGNIFICANTLY BETTER CHANCE of SUCCEEDING.
5) Finally, make several copies of your final products, and send a copy along with a well-written, mistake-free resume, and cover-letter describing your talent, interest in this field, and availability to the Travel Channel, and to all other similar channels; and to casting agents, who cast talent for such shows. Also, look on these channels' websites, to get the name/title of the proper contact/submission/HR person. (Make sure that only positive comments show up on your blog/website, and then... make sure to mention your site and its popularity/number of "hits/clicks" on your resume or cover letter (only if your site is in fact popular)).
6) Also, check out the Ross Reports (for talent/casting agents) & BackStage magazine online for similar jobs, and for advice cracking into this field: http://www.backstage.com/bso/production-listings/index.jsp
Anyone else have a question about Jobs/Careers/Work?
Please feel free to ask your question in the comment section of any post on my blog: